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