source4/dsdb/repl/replicated_objects.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   3    Helper functions for applying replicated objects
   4
   5    Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 */
  21
  22 #include "includes.h"
  23 #include "dsdb/samdb/samdb.h"
  24 #include "lib/ldb/include/ldb_errors.h"
  25 #include "../lib/util/dlinklist.h"
  26 #include "librpc/gen_ndr/ndr_misc.h"
  27 #include "librpc/gen_ndr/ndr_drsuapi.h"
  28 #include "librpc/gen_ndr/ndr_drsblobs.h"
  29 #include "../lib/crypto/crypto.h"
  30 #include "../libcli/drsuapi/drsuapi.h"
  31 #include "libcli/auth/libcli_auth.h"
  32 #include "param/param.h"
  33
  34 static WERROR dsdb_convert_object(struct ldb_context *ldb,
  35                                   const struct dsdb_schema *schema,
  36                                   struct dsdb_extended_replicated_objects *ctr,
  37                                   const struct drsuapi_DsReplicaObjectListItemEx *in,
  38                                   const DATA_BLOB *gensec_skey,
  39                                   TALLOC_CTX *mem_ctx,
  40                                   struct dsdb_extended_replicated_object *out)
  41 {
  42         NTSTATUS nt_status;
  43         enum ndr_err_code ndr_err;
  44         WERROR status;
  45         uint32_t i;
  46         struct ldb_message *msg;
  47         struct replPropertyMetaDataBlob *md;
  48         struct ldb_val guid_value;
  49         NTTIME whenChanged = 0;
  50         time_t whenChanged_t;
  51         const char *whenChanged_s;
  52         const char *rdn_name = NULL;
  53         const struct ldb_val *rdn_value = NULL;
  54         const struct dsdb_attribute *rdn_attr = NULL;
  55         uint32_t rdn_attid;
  56         struct drsuapi_DsReplicaAttribute *name_a = NULL;
  57         struct drsuapi_DsReplicaMetaData *name_d = NULL;
  58         struct replPropertyMetaData1 *rdn_m = NULL;
  59         struct dom_sid *sid = NULL;
  60         uint32_t rid = 0;
  61         int ret;
  62
  63         if (!in->object.identifier) {
  64                 return WERR_FOOBAR;
  65         }
  66
  67         if (!in->object.identifier->dn || !in->object.identifier->dn[0]) {
  68                 return WERR_FOOBAR;
  69         }
  70
  71         if (in->object.attribute_ctr.num_attributes != 0 && !in->meta_data_ctr) {
  72                 return WERR_FOOBAR;
  73         }
  74
  75         if (in->object.attribute_ctr.num_attributes != in->meta_data_ctr->count) {
  76                 return WERR_FOOBAR;
  77         }
  78
  79         sid = &in->object.identifier->sid;
  80         if (sid->num_auths > 0) {
  81                 rid = sid->sub_auths[sid->num_auths - 1];
  82         }
  83
  84         msg = ldb_msg_new(mem_ctx);
  85         W_ERROR_HAVE_NO_MEMORY(msg);
  86
  87         msg->dn                 = ldb_dn_new(msg, ldb, in->object.identifier->dn);
  88         W_ERROR_HAVE_NO_MEMORY(msg->dn);
  89
  90         rdn_name        = ldb_dn_get_rdn_name(msg->dn);
  91         rdn_attr        = dsdb_attribute_by_lDAPDisplayName(schema, rdn_name);
  92         if (!rdn_attr) {
  93                 return WERR_FOOBAR;
  94         }
  95         rdn_attid       = rdn_attr->attributeID_id;
  96         rdn_value       = ldb_dn_get_rdn_val(msg->dn);
  97
  98         msg->num_elements       = in->object.attribute_ctr.num_attributes;
  99         msg->elements           = talloc_array(msg, struct ldb_message_element,
 100                                                msg->num_elements);
 101         W_ERROR_HAVE_NO_MEMORY(msg->elements);
 102
 103         md = talloc(mem_ctx, struct replPropertyMetaDataBlob);
 104         W_ERROR_HAVE_NO_MEMORY(md);
 105
 106         md->version             = 1;
 107         md->reserved            = 0;
 108         md->ctr.ctr1.count      = in->meta_data_ctr->count;
 109         md->ctr.ctr1.reserved   = 0;
 110         md->ctr.ctr1.array      = talloc_array(mem_ctx,
 111                                                struct replPropertyMetaData1,
 112                                                md->ctr.ctr1.count + 1); /* +1 because of the RDN attribute */
 113         W_ERROR_HAVE_NO_MEMORY(md->ctr.ctr1.array);
 114
 115         for (i=0; i < in->meta_data_ctr->count; i++) {
 116                 struct drsuapi_DsReplicaAttribute *a;
 117                 struct drsuapi_DsReplicaMetaData *d;
 118                 struct replPropertyMetaData1 *m;
 119                 struct ldb_message_element *e;
 120
 121                 a = &in->object.attribute_ctr.attributes[i];
 122                 d = &in->meta_data_ctr->meta_data[i];
 123                 m = &md->ctr.ctr1.array[i];
 124                 e = &msg->elements[i];
 125
 126                 status = drsuapi_decrypt_attribute(a->value_ctr.values[0].blob, gensec_skey, rid, a);
 127                 W_ERROR_NOT_OK_RETURN(status);
 128
 129                 status = dsdb_attribute_drsuapi_to_ldb(ldb, schema, a, msg->elements, e);
 130                 W_ERROR_NOT_OK_RETURN(status);
 131
 132                 m->attid                        = a->attid;
 133                 m->version                      = d->version;
 134                 m->originating_change_time      = d->originating_change_time;
 135                 m->originating_invocation_id    = d->originating_invocation_id;
 136                 m->originating_usn              = d->originating_usn;
 137                 m->local_usn                    = 0;
 138
 139                 if (d->originating_change_time > whenChanged) {
 140                         whenChanged = d->originating_change_time;
 141                 }
 142
 143                 if (a->attid == DRSUAPI_ATTRIBUTE_name) {
 144                         name_a = a;
 145                         name_d = d;
 146                         rdn_m = &md->ctr.ctr1.array[md->ctr.ctr1.count];
 147                 }
 148         }
 149
 150         if (rdn_m) {
 151                 ret = ldb_msg_add_value(msg, rdn_attr->lDAPDisplayName, rdn_value, NULL);
 152                 if (ret != LDB_SUCCESS) {
 153                         return WERR_FOOBAR;
 154                 }
 155
 156                 rdn_m->attid                            = rdn_attid;
 157                 rdn_m->version                          = name_d->version;
 158                 rdn_m->originating_change_time          = name_d->originating_change_time;
 159                 rdn_m->originating_invocation_id        = name_d->originating_invocation_id;
 160                 rdn_m->originating_usn                  = name_d->originating_usn;
 161                 rdn_m->local_usn                        = 0;
 162                 md->ctr.ctr1.count++;
 163
 164         }
 165
 166         whenChanged_t = nt_time_to_unix(whenChanged);
 167         whenChanged_s = ldb_timestring(msg, whenChanged_t);
 168         W_ERROR_HAVE_NO_MEMORY(whenChanged_s);
 169
 170         ndr_err = ndr_push_struct_blob(&guid_value, msg,
 171                                        lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
 172                                        &in->object.identifier->guid,
 173                                          (ndr_push_flags_fn_t)ndr_push_GUID);
 174         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 175                 nt_status = ndr_map_error2ntstatus(ndr_err);
 176                 return ntstatus_to_werror(nt_status);
 177         }
 178
 179         out->msg                = msg;
 180         out->guid_value         = guid_value;
 181         out->when_changed       = whenChanged_s;
 182         out->meta_data          = md;
 183         return WERR_OK;
 184 }
 185
 186 WERROR dsdb_extended_replicated_objects_commit(struct ldb_context *ldb,
 187                                                const char *partition_dn,
 188                                                const struct drsuapi_DsReplicaOIDMapping_Ctr *mapping_ctr,
 189                                                uint32_t object_count,
 190                                                const struct drsuapi_DsReplicaObjectListItemEx *first_object,
 191                                                uint32_t linked_attributes_count,
 192                                                const struct drsuapi_DsReplicaLinkedAttribute *linked_attributes,
 193                                                const struct repsFromTo1 *source_dsa,
 194                                                const struct drsuapi_DsReplicaCursor2CtrEx *uptodateness_vector,
 195                                                const DATA_BLOB *gensec_skey,
 196                                                TALLOC_CTX *mem_ctx,
 197                                                struct dsdb_extended_replicated_objects **_out)
 198 {
 199         WERROR status;
 200         const struct dsdb_schema *schema;
 201         struct dsdb_extended_replicated_objects *out;
 202         struct ldb_result *ext_res;
 203         const struct drsuapi_DsReplicaObjectListItemEx *cur;
 204         uint32_t i;
 205         int ret;
 206
 207         schema = dsdb_get_schema(ldb);
 208         if (!schema) {
 209                 return WERR_DS_SCHEMA_NOT_LOADED;
 210         }
 211
 212         status = dsdb_verify_oid_mappings_drsuapi(schema, mapping_ctr);
 213         W_ERROR_NOT_OK_RETURN(status);
 214
 215         out = talloc_zero(mem_ctx, struct dsdb_extended_replicated_objects);
 216         W_ERROR_HAVE_NO_MEMORY(out);
 217         out->version            = DSDB_EXTENDED_REPLICATED_OBJECTS_VERSION;
 218
 219         out->partition_dn       = ldb_dn_new(out, ldb, partition_dn);
 220         W_ERROR_HAVE_NO_MEMORY(out->partition_dn);
 221
 222         out->source_dsa         = source_dsa;
 223         out->uptodateness_vector= uptodateness_vector;
 224
 225         out->num_objects        = object_count;
 226         out->objects            = talloc_array(out,
 227                                                struct dsdb_extended_replicated_object,
 228                                                out->num_objects);
 229         W_ERROR_HAVE_NO_MEMORY(out->objects);
 230
 231         for (i=0, cur = first_object; cur; cur = cur->next_object, i++) {
 232                 if (i == out->num_objects) {
 233                         return WERR_FOOBAR;
 234                 }
 235
 236                 status = dsdb_convert_object(ldb, schema, out, cur, gensec_skey, out->objects, &out->objects[i]);
 237                 W_ERROR_NOT_OK_RETURN(status);
 238         }
 239         if (i != out->num_objects) {
 240                 return WERR_FOOBAR;
 241         }
 242
 243         /* TODO: handle linked attributes */
 244
 245         ret = ldb_extended(ldb, DSDB_EXTENDED_REPLICATED_OBJECTS_OID, out, &ext_res);
 246         if (ret != LDB_SUCCESS) {
 247                 DEBUG(0,("Failed to apply records: %s: %s\n",
 248                          ldb_errstring(ldb), ldb_strerror(ret)));
 249                 talloc_free(out);
 250                 return WERR_FOOBAR;
 251         }
 252         talloc_free(ext_res);
 253
 254         if (_out) {
 255                 *_out = out;
 256         } else {
 257                 talloc_free(out);
 258         }
 259
 260         return WERR_OK;
 261 }