source3/winbindd/wb_lookupname.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async 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 "librpc/gen_ndr/cli_wbint.h"
  23
  24 struct wb_lookupname_state {
  25         struct tevent_context *ev;
  26         const char *dom_name;
  27         const char *name;
  28         uint32_t flags;
  29         struct dom_sid sid;
  30         enum lsa_SidType type;
  31 };
  32
  33 static void wb_lookupname_done(struct tevent_req *subreq);
  34 static void wb_lookupname_root_done(struct tevent_req *subreq);
  35
  36 struct tevent_req *wb_lookupname_send(TALLOC_CTX *mem_ctx,
  37                                       struct tevent_context *ev,
  38                                       const char *dom_name, const char *name,
  39                                       uint32_t flags)
  40 {
  41         struct tevent_req *req, *subreq;
  42         struct wb_lookupname_state *state;
  43         struct winbindd_domain *domain;
  44
  45         req = tevent_req_create(mem_ctx, &state, struct wb_lookupname_state);
  46         if (req == NULL) {
  47                 return NULL;
  48         }
  49         state->ev = ev;
  50         state->flags = flags;
  51
  52         /*
  53          * Uppercase domain and name so that we become cache-friendly
  54          */
  55         state->dom_name = talloc_strdup_upper(state, dom_name);
  56         if (tevent_req_nomem(state->dom_name, req)) {
  57                 return tevent_req_post(req, ev);
  58         }
  59         state->name = talloc_strdup_upper(state, name);
  60         if (tevent_req_nomem(state->name, req)) {
  61                 return tevent_req_post(req, ev);
  62         }
  63
  64         domain = find_lookup_domain_from_name(state->dom_name);
  65         if (domain == NULL) {
  66                 DEBUG(5, ("Could not find domain for %s\n", state->dom_name));
  67                 tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
  68                 return tevent_req_post(req, ev);
  69         }
  70
  71         subreq = rpccli_wbint_LookupName_send(
  72                 state, ev, domain->child.rpccli, state->dom_name, state->name,
  73                 flags, &state->type, &state->sid);
  74         if (tevent_req_nomem(subreq, req)) {
  75                 return tevent_req_post(req, ev);
  76         }
  77         tevent_req_set_callback(subreq, wb_lookupname_done, req);
  78         return req;
  79 }
  80
  81 static void wb_lookupname_done(struct tevent_req *subreq)
  82 {
  83         struct tevent_req *req = tevent_req_callback_data(
  84                 subreq, struct tevent_req);
  85         struct wb_lookupname_state *state = tevent_req_data(
  86                 req, struct wb_lookupname_state);
  87         struct winbindd_domain *root_domain;
  88         NTSTATUS status, result;
  89
  90         status = rpccli_wbint_LookupName_recv(subreq, state, &result);
  91         TALLOC_FREE(subreq);
  92         if (!NT_STATUS_IS_OK(status)) {
  93                 tevent_req_nterror(req, status);
  94                 return;
  95         }
  96         if (NT_STATUS_IS_OK(result)) {
  97                 tevent_req_done(req);
  98                 return;
  99         }
 100
 101         /*
 102          * "our" DC did not find it, lets retry with the forest root
 103          * domain
 104          */
 105
 106         root_domain = find_root_domain();
 107         if (root_domain == NULL) {
 108                 tevent_req_nterror(req, result);
 109                 return;
 110         }
 111
 112         subreq = rpccli_wbint_LookupName_send(
 113                 state, state->ev, root_domain->child.rpccli, state->dom_name,
 114                 state->name, state->flags, &state->type, &state->sid);
 115         if (tevent_req_nomem(subreq, req)) {
 116                 return;
 117         }
 118         tevent_req_set_callback(subreq, wb_lookupname_root_done, req);
 119 }
 120
 121 static void wb_lookupname_root_done(struct tevent_req *subreq)
 122 {
 123         struct tevent_req *req = tevent_req_callback_data(
 124                 subreq, struct tevent_req);
 125         struct wb_lookupname_state *state = tevent_req_data(
 126                 req, struct wb_lookupname_state);
 127         NTSTATUS status, result;
 128
 129         status = rpccli_wbint_LookupName_recv(subreq, state, &result);
 130         TALLOC_FREE(subreq);
 131         if (!NT_STATUS_IS_OK(status)) {
 132                 tevent_req_nterror(req, status);
 133                 return;
 134         }
 135         if (!NT_STATUS_IS_OK(result)) {
 136                 tevent_req_nterror(req, result);
 137                 return;
 138         }
 139         tevent_req_done(req);
 140 }
 141
 142 NTSTATUS wb_lookupname_recv(struct tevent_req *req, struct dom_sid *sid,
 143                             enum lsa_SidType *type)
 144 {
 145         struct wb_lookupname_state *state = tevent_req_data(
 146                 req, struct wb_lookupname_state);
 147         NTSTATUS status;
 148
 149         if (tevent_req_is_nterror(req, &status)) {
 150                 return status;
 151         }
 152         sid_copy(sid, &state->sid);
 153         *type = state->type;
 154         return NT_STATUS_OK;
 155 }