Line data    Source code

       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             : #include "libcli/security/dom_sid.h"
      23             : 
      24             : struct winbindd_getgrgid_state {
      25             :         struct tevent_context *ev;
      26             :         struct unixid xid;
      27             :         struct dom_sid *sid;
      28             :         const char *domname;
      29             :         const char *name;
      30             :         gid_t gid;
      31             :         struct db_context *members;
      32             : };
      33             : 
      34             : static void winbindd_getgrgid_gid2sid_done(struct tevent_req *subreq);
      35             : static void winbindd_getgrgid_done(struct tevent_req *subreq);
      36             : 
      37        2154 : struct tevent_req *winbindd_getgrgid_send(TALLOC_CTX *mem_ctx,
      38             :                                           struct tevent_context *ev,
      39             :                                           struct winbindd_cli_state *cli,
      40             :                                           struct winbindd_request *request)
      41             : {
      42           0 :         struct tevent_req *req, *subreq;
      43           0 :         struct winbindd_getgrgid_state *state;
      44             : 
      45        2154 :         req = tevent_req_create(mem_ctx, &state,
      46             :                                 struct winbindd_getgrgid_state);
      47        2154 :         if (req == NULL) {
      48           0 :                 return NULL;
      49             :         }
      50        2154 :         state->ev = ev;
      51             : 
      52        2154 :         D_NOTICE("[%s (%u)] Winbind external command GETGRGID start.\n"
      53             :                  "gid=%u\n",
      54             :                  cli->client_name,
      55             :                  (unsigned int)cli->pid,
      56             :                  (int)request->data.gid);
      57             : 
      58        2154 :         state->xid = (struct unixid) {
      59        2154 :                 .id = request->data.uid, .type = ID_TYPE_GID };
      60             : 
      61        2154 :         subreq = wb_xids2sids_send(state, ev, &state->xid, 1);
      62        2154 :         if (tevent_req_nomem(subreq, req)) {
      63           0 :                 return tevent_req_post(req, ev);
      64             :         }
      65        2154 :         tevent_req_set_callback(subreq, winbindd_getgrgid_gid2sid_done,
      66             :                                 req);
      67        2154 :         return req;
      68             : }
      69             : 
      70        2154 : static void winbindd_getgrgid_gid2sid_done(struct tevent_req *subreq)
      71             : {
      72        2154 :         struct tevent_req *req = tevent_req_callback_data(
      73             :                 subreq, struct tevent_req);
      74        2154 :         struct winbindd_getgrgid_state *state = tevent_req_data(
      75             :                 req, struct winbindd_getgrgid_state);
      76           0 :         NTSTATUS status;
      77             : 
      78        2154 :         status = wb_xids2sids_recv(subreq, state, &state->sid);
      79        2154 :         TALLOC_FREE(subreq);
      80        2154 :         if (tevent_req_nterror(req, status)) {
      81           6 :                 return;
      82             :         }
      83        2154 :         if (is_null_sid(state->sid)) {
      84           6 :                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_GROUP);
      85           6 :                 return;
      86             :         }
      87             : 
      88        2148 :         subreq = wb_getgrsid_send(state, state->ev, state->sid,
      89             :                                   lp_winbind_expand_groups());
      90        2148 :         if (tevent_req_nomem(subreq, req)) {
      91           0 :                 return;
      92             :         }
      93        2148 :         tevent_req_set_callback(subreq, winbindd_getgrgid_done, req);
      94             : }
      95             : 
      96        2148 : static void winbindd_getgrgid_done(struct tevent_req *subreq)
      97             : {
      98        2148 :         struct tevent_req *req = tevent_req_callback_data(
      99             :                 subreq, struct tevent_req);
     100        2148 :         struct winbindd_getgrgid_state *state = tevent_req_data(
     101             :                 req, struct winbindd_getgrgid_state);
     102           0 :         NTSTATUS status;
     103             : 
     104        2148 :         status = wb_getgrsid_recv(subreq, state, &state->domname, &state->name,
     105             :                                   &state->gid, &state->members);
     106        2148 :         TALLOC_FREE(subreq);
     107        2148 :         if (tevent_req_nterror(req, status)) {
     108           0 :                 return;
     109             :         }
     110        2148 :         tevent_req_done(req);
     111             : }
     112             : 
     113        2154 : NTSTATUS winbindd_getgrgid_recv(struct tevent_req *req,
     114             :                                 struct winbindd_response *response)
     115             : {
     116        2154 :         struct winbindd_getgrgid_state *state = tevent_req_data(
     117             :                 req, struct winbindd_getgrgid_state);
     118           0 :         NTSTATUS status;
     119           0 :         int num_members;
     120           0 :         char *buf;
     121             : 
     122        2154 :         if (tevent_req_is_nterror(req, &status)) {
     123           0 :                 struct dom_sid_buf sidbuf;
     124           6 :                 D_WARNING("Could not convert sid %s: %s\n",
     125             :                           dom_sid_str_buf(state->sid, &sidbuf),
     126             :                           nt_errstr(status));
     127           6 :                 return status;
     128             :         }
     129             : 
     130        2148 :         if (!fill_grent(talloc_tos(), &response->data.gr, state->domname,
     131             :                         state->name, state->gid)) {
     132           0 :                 D_WARNING("fill_grent failed\n");
     133           0 :                 return NT_STATUS_NO_MEMORY;
     134             :         }
     135             : 
     136        2148 :         status = winbindd_print_groupmembers(state->members, response,
     137             :                                              &num_members, &buf);
     138        2148 :         if (!NT_STATUS_IS_OK(status)) {
     139           0 :                 D_WARNING("Failed with %s.\n", nt_errstr(status));
     140           0 :                 return status;
     141             :         }
     142             : 
     143        2148 :         response->data.gr.num_gr_mem = (uint32_t)num_members;
     144             : 
     145             :         /* Group membership lives at start of extra data */
     146             : 
     147        2148 :         response->data.gr.gr_mem_ofs = 0;
     148        2148 :         response->extra_data.data = buf;
     149        2148 :         response->length += talloc_get_size(response->extra_data.data);
     150             : 
     151        2148 :         D_NOTICE("Winbind external command GETGRGID end.\n"
     152             :                  "Returning %"PRIu32" group member(s).\n",
     153             :                  response->data.gr.num_gr_mem);
     154             : 
     155        2148 :         return NT_STATUS_OK;
     156             : }