source3/winbindd/winbindd_dsgetdcname.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    async implementation of WINBINDD_DSGETDCNAME
   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
  24 struct winbindd_dsgetdcname_state {
  25         struct GUID guid;
  26         struct netr_DsRGetDCNameInfo *dc_info;
  27 };
  28
  29 static uint32_t get_dsgetdc_flags(uint32_t wbc_flags);
  30 static void winbindd_dsgetdcname_done(struct tevent_req *subreq);
  31
  32 struct tevent_req *winbindd_dsgetdcname_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_child *child;
  39         struct winbindd_dsgetdcname_state *state;
  40         struct GUID *guid_ptr = NULL;
  41         uint32_t ds_flags = 0;
  42         NTSTATUS status;
  43
  44         req = tevent_req_create(mem_ctx, &state,
  45                                 struct winbindd_dsgetdcname_state);
  46         if (req == NULL) {
  47                 return NULL;
  48         }
  49
  50         request->data.dsgetdcname.domain_name
  51                 [sizeof(request->data.dsgetdcname.domain_name)-1] = '\0';
  52         request->data.dsgetdcname.site_name
  53                 [sizeof(request->data.dsgetdcname.site_name)-1] = '\0';
  54         request->data.dsgetdcname.domain_guid
  55                 [sizeof(request->data.dsgetdcname.domain_guid)-1] = '\0';
  56
  57         DEBUG(3, ("[%5lu]: dsgetdcname for %s\n", (unsigned long)cli->pid,
  58                   request->data.dsgetdcname.domain_name));
  59
  60         ds_flags = get_dsgetdc_flags(request->flags);
  61
  62         status = GUID_from_string(request->data.dsgetdcname.domain_guid,
  63                                   &state->guid);
  64         if (NT_STATUS_IS_OK(status) && !GUID_all_zero(&state->guid)) {
  65                 guid_ptr = &state->guid;
  66         }
  67
  68         child = locator_child();
  69
  70         subreq = dcerpc_wbint_DsGetDcName_send(
  71                 state, ev, child->binding_handle,
  72                 request->data.dsgetdcname.domain_name, guid_ptr,
  73                 request->data.dsgetdcname.site_name,
  74                 ds_flags, &state->dc_info);
  75         if (tevent_req_nomem(subreq, req)) {
  76                 return tevent_req_post(req, ev);
  77         }
  78         tevent_req_set_callback(subreq, winbindd_dsgetdcname_done, req);
  79         return req;
  80 }
  81
  82 static void winbindd_dsgetdcname_done(struct tevent_req *subreq)
  83 {
  84         struct tevent_req *req = tevent_req_callback_data(
  85                 subreq, struct tevent_req);
  86         struct winbindd_dsgetdcname_state *state = tevent_req_data(
  87                 req, struct winbindd_dsgetdcname_state);
  88         NTSTATUS status, result;
  89
  90         status = dcerpc_wbint_DsGetDcName_recv(subreq, state, &result);
  91         TALLOC_FREE(subreq);
  92         if (any_nt_status_not_ok(status, result, &status)) {
  93                 tevent_req_nterror(req, status);
  94                 return;
  95         }
  96         tevent_req_done(req);
  97 }
  98
  99 NTSTATUS winbindd_dsgetdcname_recv(struct tevent_req *req,
 100                                    struct winbindd_response *response)
 101 {
 102         struct winbindd_dsgetdcname_state *state = tevent_req_data(
 103                 req, struct winbindd_dsgetdcname_state);
 104         char *guid_str;
 105         NTSTATUS status;
 106
 107         if (tevent_req_is_nterror(req, &status)) {
 108                 DEBUG(5, ("dsgetdcname failed: %s\n", nt_errstr(status)));
 109                 return status;
 110         }
 111
 112         guid_str = GUID_string(talloc_tos(), &state->dc_info->domain_guid);
 113         if (guid_str == NULL) {
 114                 return NT_STATUS_NO_MEMORY;
 115         }
 116
 117         fstrcpy(response->data.dsgetdcname.dc_unc,
 118                 state->dc_info->dc_unc);
 119         fstrcpy(response->data.dsgetdcname.dc_address,
 120                 state->dc_info->dc_address);
 121         response->data.dsgetdcname.dc_address_type =
 122                 state->dc_info->dc_address_type;
 123         fstrcpy(response->data.dsgetdcname.domain_guid, guid_str);
 124         TALLOC_FREE(guid_str);
 125         fstrcpy(response->data.dsgetdcname.domain_name,
 126                 state->dc_info->domain_name);
 127         fstrcpy(response->data.dsgetdcname.forest_name,
 128                 state->dc_info->forest_name);
 129         response->data.dsgetdcname.dc_flags = state->dc_info->dc_flags;
 130         fstrcpy(response->data.dsgetdcname.dc_site_name,
 131                 state->dc_info->dc_site_name);
 132         fstrcpy(response->data.dsgetdcname.client_site_name,
 133                 state->dc_info->client_site_name);
 134
 135         return NT_STATUS_OK;
 136 }
 137
 138 static uint32_t get_dsgetdc_flags(uint32_t wbc_flags)
 139 {
 140         struct wbc_flag_map {
 141                 uint32_t wbc_dc_flag;
 142                 uint32_t ds_dc_flags;
 143         } lookup_dc_flags[] = {
 144                 { WBC_LOOKUP_DC_FORCE_REDISCOVERY,
 145                   DS_FORCE_REDISCOVERY },
 146                 { WBC_LOOKUP_DC_DS_REQUIRED,
 147                   DS_DIRECTORY_SERVICE_REQUIRED },
 148                 { WBC_LOOKUP_DC_DS_PREFERRED,
 149                   DS_DIRECTORY_SERVICE_PREFERRED},
 150                 { WBC_LOOKUP_DC_GC_SERVER_REQUIRED,
 151                   DS_GC_SERVER_REQUIRED },
 152                 { WBC_LOOKUP_DC_PDC_REQUIRED,
 153                   DS_PDC_REQUIRED},
 154                 { WBC_LOOKUP_DC_BACKGROUND_ONLY,
 155                   DS_BACKGROUND_ONLY  },
 156                 { WBC_LOOKUP_DC_IP_REQUIRED,
 157                   DS_IP_REQUIRED },
 158                 { WBC_LOOKUP_DC_KDC_REQUIRED,
 159                   DS_KDC_REQUIRED },
 160                 { WBC_LOOKUP_DC_TIMESERV_REQUIRED,
 161                   DS_TIMESERV_REQUIRED },
 162                 { WBC_LOOKUP_DC_WRITABLE_REQUIRED,
 163                   DS_WRITABLE_REQUIRED },
 164                 { WBC_LOOKUP_DC_GOOD_TIMESERV_PREFERRED,
 165                   DS_GOOD_TIMESERV_PREFERRED },
 166                 { WBC_LOOKUP_DC_AVOID_SELF,
 167                   DS_AVOID_SELF },
 168                 { WBC_LOOKUP_DC_ONLY_LDAP_NEEDED,
 169                   DS_ONLY_LDAP_NEEDED },
 170                 { WBC_LOOKUP_DC_IS_FLAT_NAME,
 171                   DS_IS_FLAT_NAME },
 172                 { WBC_LOOKUP_DC_IS_DNS_NAME,
 173                   DS_IS_DNS_NAME },
 174                 { WBC_LOOKUP_DC_TRY_NEXTCLOSEST_SITE,
 175                   DS_TRY_NEXTCLOSEST_SITE },
 176                 { WBC_LOOKUP_DC_DS_6_REQUIRED,
 177                   DS_DIRECTORY_SERVICE_6_REQUIRED },
 178                 { WBC_LOOKUP_DC_RETURN_DNS_NAME,
 179                   DS_RETURN_DNS_NAME },
 180                 { WBC_LOOKUP_DC_RETURN_FLAT_NAME,
 181                   DS_RETURN_FLAT_NAME }
 182         };
 183
 184         uint32_t ds_flags = 0;
 185         int i = 0 ;
 186
 187         for (i=0; i<ARRAY_SIZE(lookup_dc_flags); i++) {
 188                 if (wbc_flags & lookup_dc_flags[i].wbc_dc_flag) {
 189                         ds_flags |= lookup_dc_flags[i].ds_dc_flags;
 190                 }
 191         }
 192
 193         return ds_flags;
 194 }