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_winbind_c.h"
  23 #include "lib/util/string_wrappers.h"
  24
  25 struct winbindd_dsgetdcname_state {
  26         struct GUID guid;
  27         struct netr_DsRGetDCNameInfo *dc_info;
  28 };
  29
  30 static uint32_t get_dsgetdc_flags(uint32_t wbc_flags);
  31 static void winbindd_dsgetdcname_done(struct tevent_req *subreq);
  32
  33 struct tevent_req *winbindd_dsgetdcname_send(TALLOC_CTX *mem_ctx,
  34                                              struct tevent_context *ev,
  35                                              struct winbindd_cli_state *cli,
  36                                              struct winbindd_request *request)
  37 {
  38         struct tevent_req *req, *subreq;
  39         struct dcerpc_binding_handle *child_binding_handle = NULL;
  40         struct winbindd_dsgetdcname_state *state;
  41         struct GUID *guid_ptr = NULL;
  42         uint32_t ds_flags = 0;
  43         NTSTATUS status;
  44
  45         req = tevent_req_create(mem_ctx, &state,
  46                                 struct winbindd_dsgetdcname_state);
  47         if (req == NULL) {
  48                 return NULL;
  49         }
  50
  51         request->data.dsgetdcname.domain_name
  52                 [sizeof(request->data.dsgetdcname.domain_name)-1] = '\0';
  53         request->data.dsgetdcname.site_name
  54                 [sizeof(request->data.dsgetdcname.site_name)-1] = '\0';
  55         request->data.dsgetdcname.domain_guid
  56                 [sizeof(request->data.dsgetdcname.domain_guid)-1] = '\0';
  57
  58         DEBUG(3, ("[%5lu]: dsgetdcname for %s\n", (unsigned long)cli->pid,
  59                   request->data.dsgetdcname.domain_name));
  60
  61         ds_flags = get_dsgetdc_flags(request->data.dsgetdcname.flags);
  62
  63         status = GUID_from_string(request->data.dsgetdcname.domain_guid,
  64                                   &state->guid);
  65         if (NT_STATUS_IS_OK(status) && !GUID_all_zero(&state->guid)) {
  66                 guid_ptr = &state->guid;
  67         }
  68
  69         child_binding_handle = locator_child_handle();
  70
  71         subreq = dcerpc_wbint_DsGetDcName_send(
  72                 state, ev, child_binding_handle,
  73                 request->data.dsgetdcname.domain_name, guid_ptr,
  74                 request->data.dsgetdcname.site_name,
  75                 ds_flags, &state->dc_info);
  76         if (tevent_req_nomem(subreq, req)) {
  77                 return tevent_req_post(req, ev);
  78         }
  79         tevent_req_set_callback(subreq, winbindd_dsgetdcname_done, req);
  80         return req;
  81 }
  82
  83 static void winbindd_dsgetdcname_done(struct tevent_req *subreq)
  84 {
  85         struct tevent_req *req = tevent_req_callback_data(
  86                 subreq, struct tevent_req);
  87         struct winbindd_dsgetdcname_state *state = tevent_req_data(
  88                 req, struct winbindd_dsgetdcname_state);
  89         NTSTATUS status, result;
  90
  91         status = dcerpc_wbint_DsGetDcName_recv(subreq, state, &result);
  92         TALLOC_FREE(subreq);
  93         if (any_nt_status_not_ok(status, result, &status)) {
  94                 tevent_req_nterror(req, status);
  95                 return;
  96         }
  97         tevent_req_done(req);
  98 }
  99
 100 NTSTATUS winbindd_dsgetdcname_recv(struct tevent_req *req,
 101                                    struct winbindd_response *response)
 102 {
 103         struct winbindd_dsgetdcname_state *state = tevent_req_data(
 104                 req, struct winbindd_dsgetdcname_state);
 105         struct GUID_txt_buf guid_str_buf;
 106         char *guid_str;
 107         NTSTATUS status;
 108
 109         if (tevent_req_is_nterror(req, &status)) {
 110                 DEBUG(5, ("dsgetdcname failed: %s\n", nt_errstr(status)));
 111                 return status;
 112         }
 113
 114
 115         fstrcpy(response->data.dsgetdcname.dc_unc,
 116                 state->dc_info->dc_unc);
 117         fstrcpy(response->data.dsgetdcname.dc_address,
 118                 state->dc_info->dc_address);
 119         response->data.dsgetdcname.dc_address_type =
 120                 state->dc_info->dc_address_type;
 121
 122         guid_str = GUID_buf_string(&state->dc_info->domain_guid,
 123                                    &guid_str_buf);
 124         fstrcpy(response->data.dsgetdcname.domain_guid, guid_str);
 125
 126         fstrcpy(response->data.dsgetdcname.domain_name,
 127                 state->dc_info->domain_name);
 128         fstrcpy(response->data.dsgetdcname.forest_name,
 129                 state->dc_info->forest_name);
 130         response->data.dsgetdcname.dc_flags = state->dc_info->dc_flags;
 131         fstrcpy(response->data.dsgetdcname.dc_site_name,
 132                 state->dc_info->dc_site_name);
 133         fstrcpy(response->data.dsgetdcname.client_site_name,
 134                 state->dc_info->client_site_name);
 135
 136         return NT_STATUS_OK;
 137 }
 138
 139 static uint32_t get_dsgetdc_flags(uint32_t wbc_flags)
 140 {
 141         struct wbc_flag_map {
 142                 uint32_t wbc_dc_flag;
 143                 uint32_t ds_dc_flags;
 144         } lookup_dc_flags[] = {
 145                 { WBC_LOOKUP_DC_FORCE_REDISCOVERY,
 146                   DS_FORCE_REDISCOVERY },
 147                 { WBC_LOOKUP_DC_DS_REQUIRED,
 148                   DS_DIRECTORY_SERVICE_REQUIRED },
 149                 { WBC_LOOKUP_DC_DS_PREFERRED,
 150                   DS_DIRECTORY_SERVICE_PREFERRED},
 151                 { WBC_LOOKUP_DC_GC_SERVER_REQUIRED,
 152                   DS_GC_SERVER_REQUIRED },
 153                 { WBC_LOOKUP_DC_PDC_REQUIRED,
 154                   DS_PDC_REQUIRED},
 155                 { WBC_LOOKUP_DC_BACKGROUND_ONLY,
 156                   DS_BACKGROUND_ONLY  },
 157                 { WBC_LOOKUP_DC_IP_REQUIRED,
 158                   DS_IP_REQUIRED },
 159                 { WBC_LOOKUP_DC_KDC_REQUIRED,
 160                   DS_KDC_REQUIRED },
 161                 { WBC_LOOKUP_DC_TIMESERV_REQUIRED,
 162                   DS_TIMESERV_REQUIRED },
 163                 { WBC_LOOKUP_DC_WRITABLE_REQUIRED,
 164                   DS_WRITABLE_REQUIRED },
 165                 { WBC_LOOKUP_DC_GOOD_TIMESERV_PREFERRED,
 166                   DS_GOOD_TIMESERV_PREFERRED },
 167                 { WBC_LOOKUP_DC_AVOID_SELF,
 168                   DS_AVOID_SELF },
 169                 { WBC_LOOKUP_DC_ONLY_LDAP_NEEDED,
 170                   DS_ONLY_LDAP_NEEDED },
 171                 { WBC_LOOKUP_DC_IS_FLAT_NAME,
 172                   DS_IS_FLAT_NAME },
 173                 { WBC_LOOKUP_DC_IS_DNS_NAME,
 174                   DS_IS_DNS_NAME },
 175                 { WBC_LOOKUP_DC_TRY_NEXTCLOSEST_SITE,
 176                   DS_TRY_NEXTCLOSEST_SITE },
 177                 { WBC_LOOKUP_DC_DS_6_REQUIRED,
 178                   DS_DIRECTORY_SERVICE_6_REQUIRED },
 179                 { WBC_LOOKUP_DC_RETURN_DNS_NAME,
 180                   DS_RETURN_DNS_NAME },
 181                 { WBC_LOOKUP_DC_RETURN_FLAT_NAME,
 182                   DS_RETURN_FLAT_NAME }
 183         };
 184
 185         uint32_t ds_flags = 0;
 186         size_t i = 0;
 187
 188         for (i=0; i<ARRAY_SIZE(lookup_dc_flags); i++) {
 189                 if (wbc_flags & lookup_dc_flags[i].wbc_dc_flag) {
 190                         ds_flags |= lookup_dc_flags[i].ds_dc_flags;
 191                 }
 192         }
 193
 194         return ds_flags;
 195 }