source3/winbindd/winbindd_lookupname.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_LOOKUPNAME
   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_lookupname_state {
  25         struct tevent_context *ev;
  26         struct dom_sid sid;
  27         enum lsa_SidType type;
  28 };
  29
  30 static void winbindd_lookupname_done(struct tevent_req *subreq);
  31
  32 struct tevent_req *winbindd_lookupname_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_lookupname_state *state;
  39         char *p = NULL;
  40         const char *domname = NULL;
  41         const char *name = NULL;
  42         const char *namespace = NULL;
  43
  44         req = tevent_req_create(mem_ctx, &state,
  45                                 struct winbindd_lookupname_state);
  46         if (req == NULL) {
  47                 return NULL;
  48         }
  49         state->ev = ev;
  50
  51         /* Ensure null termination */
  52         request->data.name.dom_name[
  53                 sizeof(request->data.name.dom_name)-1]='\0';
  54         request->data.name.name[sizeof(request->data.name.name)-1]='\0';
  55
  56         if (strlen(request->data.name.dom_name) == 0) {
  57                 /* cope with the name being a fully qualified name */
  58                 p = strstr(request->data.name.name, lp_winbind_separator());
  59                 if (p != NULL) {
  60                         *p = '\0';
  61                         domname = request->data.name.name;
  62                         namespace = domname;
  63                         name = p + 1;
  64                 } else {
  65                         p = strchr(request->data.name.name, '@');
  66                         if (p != NULL) {
  67                                 /* upn */
  68                                 namespace = p + 1;
  69                         } else {
  70                                 namespace = "";
  71                         }
  72                         domname = "";
  73                         name = request->data.name.name;
  74                 }
  75         } else {
  76                 domname = request->data.name.dom_name;
  77                 namespace = domname;
  78                 name = request->data.name.name;
  79         }
  80
  81         DEBUG(3, ("lookupname %s%s%s\n", domname, lp_winbind_separator(),
  82                   name));
  83
  84         subreq = wb_lookupname_send(state, ev, namespace, domname, name, 0);
  85         if (tevent_req_nomem(subreq, req)) {
  86                 return tevent_req_post(req, ev);
  87         }
  88         tevent_req_set_callback(subreq, winbindd_lookupname_done, req);
  89         return req;
  90 }
  91
  92 static void winbindd_lookupname_done(struct tevent_req *subreq)
  93 {
  94         struct tevent_req *req = tevent_req_callback_data(
  95                 subreq, struct tevent_req);
  96         struct winbindd_lookupname_state *state = tevent_req_data(
  97                 req, struct winbindd_lookupname_state);
  98         NTSTATUS status;
  99
 100         status = wb_lookupname_recv(subreq, &state->sid, &state->type);
 101         TALLOC_FREE(subreq);
 102         if (tevent_req_nterror(req, status)) {
 103                 return;
 104         }
 105         tevent_req_done(req);
 106 }
 107
 108 NTSTATUS winbindd_lookupname_recv(struct tevent_req *req,
 109                                   struct winbindd_response *response)
 110 {
 111         struct winbindd_lookupname_state *state = tevent_req_data(
 112                 req, struct winbindd_lookupname_state);
 113         NTSTATUS status;
 114
 115         if (tevent_req_is_nterror(req, &status)) {
 116                 struct dom_sid_buf buf;
 117                 DEBUG(5, ("Could not convert sid %s: %s\n",
 118                           dom_sid_str_buf(&state->sid, &buf),
 119                           nt_errstr(status)));
 120                 return status;
 121         }
 122         sid_to_fstring(response->data.sid.sid, &state->sid);
 123         response->data.sid.type = state->type;
 124         return NT_STATUS_OK;
 125 }