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
  50         D_NOTICE("[%s (%u)] Winbind external command LOOKUPNAME start.\n",
  51                  cli->client_name,
  52                  (unsigned int)cli->pid);
  53
  54         state->ev = ev;
  55
  56         /* Ensure null termination */
  57         request->data.name.dom_name[
  58                 sizeof(request->data.name.dom_name)-1]='\0';
  59         request->data.name.name[sizeof(request->data.name.name)-1]='\0';
  60
  61         if (strlen(request->data.name.dom_name) == 0) {
  62                 /* cope with the name being a fully qualified name */
  63                 p = strstr(request->data.name.name, lp_winbind_separator());
  64                 if (p != NULL) {
  65                         *p = '\0';
  66                         domname = request->data.name.name;
  67                         namespace = domname;
  68                         name = p + 1;
  69                 } else {
  70                         p = strchr(request->data.name.name, '@');
  71                         if (p != NULL) {
  72                                 /* upn */
  73                                 namespace = p + 1;
  74                         } else {
  75                                 namespace = "";
  76                         }
  77                         domname = "";
  78                         name = request->data.name.name;
  79                 }
  80         } else {
  81                 domname = request->data.name.dom_name;
  82                 namespace = domname;
  83                 name = request->data.name.name;
  84         }
  85
  86         D_NOTICE("lookupname %s%s%s\n", domname, lp_winbind_separator(), name);
  87
  88         subreq = wb_lookupname_send(state, ev, namespace, domname, name, 0);
  89         if (tevent_req_nomem(subreq, req)) {
  90                 return tevent_req_post(req, ev);
  91         }
  92         tevent_req_set_callback(subreq, winbindd_lookupname_done, req);
  93         return req;
  94 }
  95
  96 static void winbindd_lookupname_done(struct tevent_req *subreq)
  97 {
  98         struct tevent_req *req = tevent_req_callback_data(
  99                 subreq, struct tevent_req);
 100         struct winbindd_lookupname_state *state = tevent_req_data(
 101                 req, struct winbindd_lookupname_state);
 102         NTSTATUS status;
 103
 104         status = wb_lookupname_recv(subreq, &state->sid, &state->type);
 105         TALLOC_FREE(subreq);
 106         if (tevent_req_nterror(req, status)) {
 107                 return;
 108         }
 109         tevent_req_done(req);
 110 }
 111
 112 NTSTATUS winbindd_lookupname_recv(struct tevent_req *req,
 113                                   struct winbindd_response *response)
 114 {
 115         struct winbindd_lookupname_state *state = tevent_req_data(
 116                 req, struct winbindd_lookupname_state);
 117         NTSTATUS status;
 118
 119         D_NOTICE("Winbind external command LOOKUPNAME end.\n");
 120         if (tevent_req_is_nterror(req, &status)) {
 121                 struct dom_sid_buf buf;
 122                 D_WARNING("Could not convert SID %s, error is %s\n",
 123                           dom_sid_str_buf(&state->sid, &buf),
 124                           nt_errstr(status));
 125                 return status;
 126         }
 127         sid_to_fstring(response->data.sid.sid, &state->sid);
 128         response->data.sid.type = state->type;
 129         return NT_STATUS_OK;
 130 }