source4/rpc_server/drsuapi/drsutil.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    useful utilities for the DRS server
   5
   6    Copyright (C) Andrew Tridgell 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "rpc_server/dcerpc_server.h"
  24 #include "dsdb/samdb/samdb.h"
  25 #include "libcli/security/dom_sid.h"
  26 #include "rpc_server/drsuapi/dcesrv_drsuapi.h"
  27 #include "libcli/security/security.h"
  28 #include "param/param.h"
  29
  30 /*
  31   format a drsuapi_DsReplicaObjectIdentifier naming context as a string
  32  */
  33 char *drs_ObjectIdentifier_to_string(TALLOC_CTX *mem_ctx,
  34                                      struct drsuapi_DsReplicaObjectIdentifier *nc)
  35 {
  36         char *guid, *sid, *ret;
  37         guid = GUID_string(mem_ctx, &nc->guid);
  38         sid  = dom_sid_string(mem_ctx, &nc->sid);
  39         ret = talloc_asprintf(mem_ctx, "<GUID=%s>;<SID=%s>;%s",
  40                               guid, sid, nc->dn);
  41         talloc_free(guid);
  42         talloc_free(sid);
  43         return ret;
  44 }
  45
  46 int drsuapi_search_with_extended_dn(struct ldb_context *ldb,
  47                                     TALLOC_CTX *mem_ctx,
  48                                     struct ldb_result **_res,
  49                                     struct ldb_dn *basedn,
  50                                     enum ldb_scope scope,
  51                                     const char * const *attrs,
  52                                     const char *sort_attrib,
  53                                     const char *filter)
  54 {
  55         int ret;
  56         struct ldb_request *req;
  57         TALLOC_CTX *tmp_ctx;
  58         struct ldb_result *res;
  59
  60         tmp_ctx = talloc_new(mem_ctx);
  61
  62         res = talloc_zero(tmp_ctx, struct ldb_result);
  63         if (!res) {
  64                 return LDB_ERR_OPERATIONS_ERROR;
  65         }
  66
  67         ret = ldb_build_search_req(&req, ldb, tmp_ctx,
  68                                    basedn,
  69                                    scope,
  70                                    filter,
  71                                    attrs,
  72                                    NULL,
  73                                    res,
  74                                    ldb_search_default_callback,
  75                                    NULL);
  76         if (ret != LDB_SUCCESS) {
  77                 talloc_free(tmp_ctx);
  78                 return ret;
  79         }
  80
  81         ret = ldb_request_add_control(req, LDB_CONTROL_EXTENDED_DN_OID, true, NULL);
  82         if (ret != LDB_SUCCESS) {
  83                 return ret;
  84         }
  85
  86         ret = ldb_request_add_control(req, LDB_CONTROL_SHOW_DELETED_OID, true, NULL);
  87         if (ret != LDB_SUCCESS) {
  88                 return ret;
  89         }
  90
  91         if (sort_attrib) {
  92                 struct ldb_server_sort_control **sort_control;
  93                 sort_control = talloc_array(req, struct ldb_server_sort_control *, 2);
  94                 if (sort_control == NULL) {
  95                         talloc_free(tmp_ctx);
  96                         return LDB_ERR_OPERATIONS_ERROR;
  97                 }
  98                 sort_control[0] = talloc(req, struct ldb_server_sort_control);
  99                 sort_control[0]->attributeName = sort_attrib;
 100                 sort_control[0]->orderingRule = NULL;
 101                 sort_control[0]->reverse = 0;
 102                 sort_control[1] = NULL;
 103
 104                 ret = ldb_request_add_control(req, LDB_CONTROL_SERVER_SORT_OID, true, sort_control);
 105                 if (ret != LDB_SUCCESS) {
 106                         return ret;
 107                 }
 108         }
 109
 110
 111         ret = ldb_request(ldb, req);
 112         if (ret == LDB_SUCCESS) {
 113                 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
 114         }
 115
 116         talloc_free(req);
 117         *_res = talloc_steal(mem_ctx, res);
 118         return ret;
 119 }
 120
 121 WERROR drs_security_level_check(struct dcesrv_call_state *dce_call, const char* call)
 122 {
 123         if (lp_parm_bool(dce_call->conn->dce_ctx->lp_ctx, NULL,
 124                          "drs", "disable_sec_check", false)) {
 125                 return WERR_OK;
 126         }
 127
 128         if (security_session_user_level(dce_call->conn->auth_state.session_info) <
 129                 SECURITY_DOMAIN_CONTROLLER) {
 130                 if (call) {
 131                         DEBUG(0,("%s refused for security token\n", call));
 132                 }
 133                 return WERR_DS_DRA_ACCESS_DENIED;
 134         }
 135
 136         return WERR_OK;
 137 }
 138
 139 void drsuapi_process_secret_attribute(struct drsuapi_DsReplicaAttribute *attr,
 140                                       struct drsuapi_DsReplicaMetaData *meta_data)
 141 {
 142         if (attr->value_ctr.num_values == 0) {
 143                 return;
 144         }
 145
 146         switch (attr->attid) {
 147         case DRSUAPI_ATTRIBUTE_dBCSPwd:
 148         case DRSUAPI_ATTRIBUTE_unicodePwd:
 149         case DRSUAPI_ATTRIBUTE_ntPwdHistory:
 150         case DRSUAPI_ATTRIBUTE_lmPwdHistory:
 151         case DRSUAPI_ATTRIBUTE_supplementalCredentials:
 152         case DRSUAPI_ATTRIBUTE_priorValue:
 153         case DRSUAPI_ATTRIBUTE_currentValue:
 154         case DRSUAPI_ATTRIBUTE_trustAuthOutgoing:
 155         case DRSUAPI_ATTRIBUTE_trustAuthIncoming:
 156         case DRSUAPI_ATTRIBUTE_initialAuthOutgoing:
 157         case DRSUAPI_ATTRIBUTE_initialAuthIncoming:
 158                 /*set value to null*/
 159                 attr->value_ctr.num_values = 0;
 160                 talloc_free(attr->value_ctr.values);
 161                 attr->value_ctr.values = NULL;
 162                 meta_data->originating_change_time = 0;
 163                 return;
 164         default:
 165                 return;
 166         }
 167         return;
 168 }