dsdb: Fix CID 1034744 Dereference after null check
[metze/samba/wip.git] / source4 / dsdb / schema / schema_syntax.c
index a6593b4f785d7ea9b8bd11f8d59e7348900c4acd..b434b6b0a5f71eec690bc638dc64ac358e5cec81 100644 (file)
@@ -1,7 +1,7 @@
-/* 
+/*
    Unix SMB/CIFS mplementation.
    DSDB schema syntaxes
-   
+
    Copyright (C) Stefan Metzmacher <metze@samba.org> 2006
    Copyright (C) Simo Sorce 2005
    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
-   
+
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
-   
+
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-   
+
 */
 #include "includes.h"
 #include "dsdb/samdb/samdb.h"
 #include "librpc/gen_ndr/ndr_drsuapi.h"
 #include "librpc/gen_ndr/ndr_security.h"
 #include "librpc/gen_ndr/ndr_misc.h"
-#include "lib/ldb/include/ldb.h"
-#include "lib/ldb/include/ldb_errors.h"
+#include <ldb.h>
+#include <ldb_errors.h>
 #include "system/time.h"
 #include "../lib/util/charset/charset.h"
 #include "librpc/ndr/libndr.h"
+#include "../lib/util/asn1.h"
 
 /**
  * Initialize dsdb_syntax_ctx with default values
@@ -41,11 +42,71 @@ void dsdb_syntax_ctx_init(struct dsdb_syntax_ctx *ctx,
 {
        ctx->ldb        = ldb;
        ctx->schema     = schema;
+
+       /*
+        * 'true' will keep current behavior,
+        * i.e. attributeID_id will be returned by default
+        */
+       ctx->is_schema_nc = true;
+
+       ctx->pfm_remote = NULL;
 }
 
 
-static WERROR dsdb_syntax_FOOBAR_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                               const struct dsdb_schema *schema,
+/**
+ * Returns ATTID for DRS attribute.
+ *
+ * ATTID depends on whether we are replicating
+ * Schema NC or msDs-IntId is set for schemaAttribute
+ * for the attribute.
+ */
+uint32_t dsdb_attribute_get_attid(const struct dsdb_attribute *attr,
+                                 bool for_schema_nc)
+{
+       if (!for_schema_nc && attr->msDS_IntId) {
+               return attr->msDS_IntId;
+       }
+
+       return attr->attributeID_id;
+}
+
+/**
+ * Map an ATTID from remote DC to a local ATTID
+ * using remote prefixMap
+ */
+static bool dsdb_syntax_attid_from_remote_attid(const struct dsdb_syntax_ctx *ctx,
+                                               TALLOC_CTX *mem_ctx,
+                                               uint32_t id_remote,
+                                               uint32_t *id_local)
+{
+       WERROR werr;
+       const char *oid;
+
+       /*
+        * map remote ATTID to local directly in case
+        * of no remote prefixMap (during provision for instance)
+        */
+       if (!ctx->pfm_remote) {
+               *id_local = id_remote;
+               return true;
+       }
+
+       werr = dsdb_schema_pfm_oid_from_attid(ctx->pfm_remote, id_remote, mem_ctx, &oid);
+       if (!W_ERROR_IS_OK(werr)) {
+               DEBUG(0,("ATTID->OID failed (%s) for: 0x%08X\n", win_errstr(werr), id_remote));
+               return false;
+       }
+
+       werr = dsdb_schema_pfm_attid_from_oid(ctx->schema->prefixmap, oid, id_local);
+       if (!W_ERROR_IS_OK(werr)) {
+               DEBUG(0,("OID->ATTID failed (%s) for: %s\n", win_errstr(werr), oid));
+               return false;
+       }
+
+       return true;
+}
+
+static WERROR dsdb_syntax_FOOBAR_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                const struct dsdb_attribute *attr,
                                                const struct drsuapi_DsReplicaAttribute *in,
                                                TALLOC_CTX *mem_ctx,
@@ -78,8 +139,7 @@ static WERROR dsdb_syntax_FOOBAR_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_FOOBAR_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                               const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_FOOBAR_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                const struct dsdb_attribute *attr,
                                                const struct ldb_message_element *in,
                                                TALLOC_CTX *mem_ctx,
@@ -88,16 +148,14 @@ static WERROR dsdb_syntax_FOOBAR_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_FOOBAR;
 }
 
-static WERROR dsdb_syntax_FOOBAR_validate_ldb(struct ldb_context *ldb,
-                                             const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_FOOBAR_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                              const struct dsdb_attribute *attr,
                                              const struct ldb_message_element *in)
 {
        return WERR_FOOBAR;
 }
 
-static WERROR dsdb_syntax_BOOL_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                             const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_BOOL_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                              const struct dsdb_attribute *attr,
                                              const struct drsuapi_DsReplicaAttribute *in,
                                              TALLOC_CTX *mem_ctx,
@@ -141,8 +199,7 @@ static WERROR dsdb_syntax_BOOL_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_BOOL_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                             const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_BOOL_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                              const struct dsdb_attribute *attr,
                                              const struct ldb_message_element *in,
                                              TALLOC_CTX *mem_ctx,
@@ -151,11 +208,12 @@ static WERROR dsdb_syntax_BOOL_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -171,9 +229,11 @@ static WERROR dsdb_syntax_BOOL_ldb_to_drsuapi(struct ldb_context *ldb,
                blobs[i] = data_blob_talloc(blobs, NULL, 4);
                W_ERROR_HAVE_NO_MEMORY(blobs[i].data);
 
-               if (strcmp("TRUE", (const char *)in->values[i].data) == 0) {
+               if (in->values[i].length >= 4 &&
+                   strncmp("TRUE", (const char *)in->values[i].data, in->values[i].length) == 0) {
                        SIVAL(blobs[i].data, 0, 0x00000001);
-               } else if (strcmp("FALSE", (const char *)in->values[i].data) == 0) {
+               } else if (in->values[i].length >= 5 &&
+                          strncmp("FALSE", (const char *)in->values[i].data, in->values[i].length) == 0) {
                        SIVAL(blobs[i].data, 0, 0x00000000);
                } else {
                        return WERR_FOOBAR;
@@ -183,37 +243,40 @@ static WERROR dsdb_syntax_BOOL_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_BOOL_validate_ldb(struct ldb_context *ldb,
-                                           const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_BOOL_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                            const struct dsdb_attribute *attr,
                                            const struct ldb_message_element *in)
 {
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
-               int t, f;
+               if (in->values[i].length == 0) {
+                       return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
+               }
 
-               t = strncmp("TRUE",
+               if (in->values[i].length >= 4 &&
+                   strncmp("TRUE",
                            (const char *)in->values[i].data,
-                           in->values[i].length);
-               f = strncmp("FALSE",
+                           in->values[i].length) == 0) {
+                       continue;
+               }
+               if (in->values[i].length >= 5 &&
+                   strncmp("FALSE",
                            (const char *)in->values[i].data,
-                           in->values[i].length);
-
-               if (t != 0 && f != 0) {
-                       return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
+                           in->values[i].length) == 0) {
+                       continue;
                }
+               return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
        }
 
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_INT32_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                              const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_INT32_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                               const struct dsdb_attribute *attr,
                                               const struct drsuapi_DsReplicaAttribute *in,
                                               TALLOC_CTX *mem_ctx,
@@ -252,8 +315,7 @@ static WERROR dsdb_syntax_INT32_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_INT32_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                              const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_INT32_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                               const struct dsdb_attribute *attr,
                                               const struct ldb_message_element *in,
                                               TALLOC_CTX *mem_ctx,
@@ -262,11 +324,12 @@ static WERROR dsdb_syntax_INT32_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -294,15 +357,14 @@ static WERROR dsdb_syntax_INT32_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_INT32_validate_ldb(struct ldb_context *ldb,
-                                            const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_INT32_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                             const struct dsdb_attribute *attr,
                                             const struct ldb_message_element *in)
 {
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
@@ -341,8 +403,7 @@ static WERROR dsdb_syntax_INT32_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_INT64_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                              const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_INT64_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                               const struct dsdb_attribute *attr,
                                               const struct drsuapi_DsReplicaAttribute *in,
                                               TALLOC_CTX *mem_ctx,
@@ -381,8 +442,7 @@ static WERROR dsdb_syntax_INT64_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_INT64_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                              const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_INT64_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                               const struct dsdb_attribute *attr,
                                               const struct ldb_message_element *in,
                                               TALLOC_CTX *mem_ctx,
@@ -391,11 +451,12 @@ static WERROR dsdb_syntax_INT64_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -421,15 +482,14 @@ static WERROR dsdb_syntax_INT64_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_INT64_validate_ldb(struct ldb_context *ldb,
-                                            const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_INT64_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                             const struct dsdb_attribute *attr,
                                             const struct ldb_message_element *in)
 {
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
@@ -467,8 +527,7 @@ static WERROR dsdb_syntax_INT64_validate_ldb(struct ldb_context *ldb,
 
        return WERR_OK;
 }
-static WERROR dsdb_syntax_NTTIME_UTC_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                                   const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_NTTIME_UTC_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                    const struct dsdb_attribute *attr,
                                                    const struct drsuapi_DsReplicaAttribute *in,
                                                    TALLOC_CTX *mem_ctx,
@@ -498,10 +557,15 @@ static WERROR dsdb_syntax_NTTIME_UTC_drsuapi_to_ldb(struct ldb_context *ldb,
                }
 
                v = BVAL(in->value_ctr.values[i].blob->data, 0);
+               if (v == 0) {
+                       /* special case for 1601 zero timestamp */
+                       out->values[i] = data_blob_string_const("16010101000000.0Z");
+                       continue;
+               }
                v *= 10000000;
                t = nt_time_to_unix(v);
 
-               /* 
+               /*
                 * NOTE: On a w2k3 server you can set a GeneralizedTime string
                 *       via LDAP, but you get back an UTCTime string,
                 *       but via DRSUAPI you get back the NTTIME_1sec value
@@ -510,7 +574,7 @@ static WERROR dsdb_syntax_NTTIME_UTC_drsuapi_to_ldb(struct ldb_context *ldb,
                 *       So if we store the UTCTime string in our ldb
                 *       we'll loose information!
                 */
-               str = ldb_timestring_utc(out->values, t); 
+               str = ldb_timestring_utc(out->values, t);
                W_ERROR_HAVE_NO_MEMORY(str);
                out->values[i] = data_blob_string_const(str);
        }
@@ -518,8 +582,7 @@ static WERROR dsdb_syntax_NTTIME_UTC_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_NTTIME_UTC_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                                   const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_NTTIME_UTC_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                    const struct dsdb_attribute *attr,
                                                    const struct ldb_message_element *in,
                                                    TALLOC_CTX *mem_ctx,
@@ -528,11 +591,12 @@ static WERROR dsdb_syntax_NTTIME_UTC_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -551,6 +615,11 @@ static WERROR dsdb_syntax_NTTIME_UTC_ldb_to_drsuapi(struct ldb_context *ldb,
                blobs[i] = data_blob_talloc(blobs, NULL, 8);
                W_ERROR_HAVE_NO_MEMORY(blobs[i].data);
 
+               if (ldb_val_string_cmp(&in->values[i], "16010101000000.0Z") == 0) {
+                       SBVALS(blobs[i].data, 0, 0);
+                       continue;
+               }
+
                t = ldb_string_utc_to_time((const char *)in->values[i].data);
                unix_to_nt_time(&v, t);
                v /= 10000000;
@@ -561,15 +630,14 @@ static WERROR dsdb_syntax_NTTIME_UTC_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_NTTIME_UTC_validate_ldb(struct ldb_context *ldb,
-                                                 const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_NTTIME_UTC_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                                  const struct dsdb_attribute *attr,
                                                  const struct ldb_message_element *in)
 {
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
@@ -582,9 +650,8 @@ static WERROR dsdb_syntax_NTTIME_UTC_validate_ldb(struct ldb_context *ldb,
                }
                memcpy(buf, in->values[i].data, in->values[i].length);
 
-               errno = 0;
                t = ldb_string_utc_to_time(buf);
-               if (errno != 0) {
+               if (t == 0) {
                        return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
                }
 
@@ -595,7 +662,7 @@ static WERROR dsdb_syntax_NTTIME_UTC_validate_ldb(struct ldb_context *ldb,
                }
 
                if (attr->rangeUpper) {
-                       if ((int32_t)t > (int32_t)*attr->rangeLower) {
+                       if ((int32_t)t > (int32_t)*attr->rangeUpper) {
                                return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
                        }
                }
@@ -609,8 +676,7 @@ static WERROR dsdb_syntax_NTTIME_UTC_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_NTTIME_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                               const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_NTTIME_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                const struct dsdb_attribute *attr,
                                                const struct drsuapi_DsReplicaAttribute *in,
                                                TALLOC_CTX *mem_ctx,
@@ -640,10 +706,15 @@ static WERROR dsdb_syntax_NTTIME_drsuapi_to_ldb(struct ldb_context *ldb,
                }
 
                v = BVAL(in->value_ctr.values[i].blob->data, 0);
+               if (v == 0) {
+                       /* special case for 1601 zero timestamp */
+                       out->values[i] = data_blob_string_const("16010101000000.0Z");
+                       continue;
+               }
                v *= 10000000;
                t = nt_time_to_unix(v);
 
-               str = ldb_timestring(out->values, t); 
+               str = ldb_timestring(out->values, t);
                W_ERROR_HAVE_NO_MEMORY(str);
 
                out->values[i] = data_blob_string_const(str);
@@ -652,8 +723,7 @@ static WERROR dsdb_syntax_NTTIME_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_NTTIME_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                               const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_NTTIME_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                const struct dsdb_attribute *attr,
                                                const struct ldb_message_element *in,
                                                TALLOC_CTX *mem_ctx,
@@ -662,11 +732,12 @@ static WERROR dsdb_syntax_NTTIME_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -686,6 +757,11 @@ static WERROR dsdb_syntax_NTTIME_ldb_to_drsuapi(struct ldb_context *ldb,
                blobs[i] = data_blob_talloc(blobs, NULL, 8);
                W_ERROR_HAVE_NO_MEMORY(blobs[i].data);
 
+               if (ldb_val_string_cmp(&in->values[i], "16010101000000.0Z") == 0) {
+                       SBVALS(blobs[i].data, 0, 0);
+                       continue;
+               }
+
                ret = ldb_val_to_time(&in->values[i], &t);
                if (ret != LDB_SUCCESS) {
                        return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
@@ -699,15 +775,14 @@ static WERROR dsdb_syntax_NTTIME_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_NTTIME_validate_ldb(struct ldb_context *ldb,
-                                             const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_NTTIME_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                              const struct dsdb_attribute *attr,
                                              const struct ldb_message_element *in)
 {
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
@@ -726,7 +801,7 @@ static WERROR dsdb_syntax_NTTIME_validate_ldb(struct ldb_context *ldb,
                }
 
                if (attr->rangeUpper) {
-                       if ((int32_t)t > (int32_t)*attr->rangeLower) {
+                       if ((int32_t)t > (int32_t)*attr->rangeUpper) {
                                return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
                        }
                }
@@ -735,8 +810,7 @@ static WERROR dsdb_syntax_NTTIME_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DATA_BLOB_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                                  const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DATA_BLOB_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct drsuapi_DsReplicaAttribute *in,
                                                   TALLOC_CTX *mem_ctx,
@@ -762,15 +836,14 @@ static WERROR dsdb_syntax_DATA_BLOB_drsuapi_to_ldb(struct ldb_context *ldb,
                }
 
                out->values[i] = data_blob_dup_talloc(out->values,
-                                                     in->value_ctr.values[i].blob);
+                                                     *in->value_ctr.values[i].blob);
                W_ERROR_HAVE_NO_MEMORY(out->values[i].data);
        }
 
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DATA_BLOB_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                                  const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DATA_BLOB_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct ldb_message_element *in,
                                                   TALLOC_CTX *mem_ctx,
@@ -779,11 +852,12 @@ static WERROR dsdb_syntax_DATA_BLOB_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -796,20 +870,19 @@ static WERROR dsdb_syntax_DATA_BLOB_ldb_to_drsuapi(struct ldb_context *ldb,
        for (i=0; i < in->num_values; i++) {
                out->value_ctr.values[i].blob   = &blobs[i];
 
-               blobs[i] = data_blob_dup_talloc(blobs, &in->values[i]);
+               blobs[i] = data_blob_dup_talloc(blobs, in->values[i]);
                W_ERROR_HAVE_NO_MEMORY(blobs[i].data);
        }
 
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DATA_BLOB_validate_one_val(struct ldb_context *ldb,
-                                                    const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DATA_BLOB_validate_one_val(const struct dsdb_syntax_ctx *ctx,
                                                     const struct dsdb_attribute *attr,
                                                     const struct ldb_val *val)
 {
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        if (attr->rangeLower) {
@@ -827,16 +900,15 @@ static WERROR dsdb_syntax_DATA_BLOB_validate_one_val(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DATA_BLOB_validate_ldb(struct ldb_context *ldb,
-                                                const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DATA_BLOB_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                                 const struct dsdb_attribute *attr,
                                                 const struct ldb_message_element *in)
 {
        unsigned int i;
        WERROR status;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
@@ -844,8 +916,7 @@ static WERROR dsdb_syntax_DATA_BLOB_validate_ldb(struct ldb_context *ldb,
                        return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
                }
 
-               status = dsdb_syntax_DATA_BLOB_validate_one_val(ldb,
-                                                               schema,
+               status = dsdb_syntax_DATA_BLOB_validate_one_val(ctx,
                                                                attr,
                                                                &in->values[i]);
                if (!W_ERROR_IS_OK(status)) {
@@ -856,8 +927,7 @@ static WERROR dsdb_syntax_DATA_BLOB_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR _dsdb_syntax_auto_OID_drsuapi_to_ldb(struct ldb_context *ldb,
-                                                  const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_auto_OID_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct drsuapi_DsReplicaAttribute *in,
                                                   TALLOC_CTX *mem_ctx,
@@ -889,13 +959,15 @@ static WERROR _dsdb_syntax_auto_OID_drsuapi_to_ldb(struct ldb_context *ldb,
 
                v = IVAL(in->value_ctr.values[i].blob->data, 0);
 
-               if ((c = dsdb_class_by_governsID_id(schema, v))) {
+               if ((c = dsdb_class_by_governsID_id(ctx->schema, v))) {
                        str = talloc_strdup(out->values, c->lDAPDisplayName);
-               } else if ((a = dsdb_attribute_by_attributeID_id(schema, v))) {
+               } else if ((a = dsdb_attribute_by_attributeID_id(ctx->schema, v))) {
                        str = talloc_strdup(out->values, a->lDAPDisplayName);
                } else {
                        WERROR werr;
-                       werr = dsdb_schema_pfm_oid_from_attid(schema->prefixmap, v, out->values, &str);
+                       SMB_ASSERT(ctx->pfm_remote);
+                       werr = dsdb_schema_pfm_oid_from_attid(ctx->pfm_remote, v,
+                                                             out->values, &str);
                        W_ERROR_NOT_OK_RETURN(werr);
                }
                W_ERROR_HAVE_NO_MEMORY(str);
@@ -907,8 +979,7 @@ static WERROR _dsdb_syntax_auto_OID_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR _dsdb_syntax_OID_obj_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                                 const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_OID_obj_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                  const struct dsdb_attribute *attr,
                                                  const struct drsuapi_DsReplicaAttribute *in,
                                                  TALLOC_CTX *mem_ctx,
@@ -925,7 +996,7 @@ static WERROR _dsdb_syntax_OID_obj_drsuapi_to_ldb(struct ldb_context *ldb,
        W_ERROR_HAVE_NO_MEMORY(out->values);
 
        for (i=0; i < out->num_values; i++) {
-               uint32_t v;
+               uint32_t v, vo;
                const struct dsdb_class *c;
                const char *str;
 
@@ -938,12 +1009,23 @@ static WERROR _dsdb_syntax_OID_obj_drsuapi_to_ldb(struct ldb_context *ldb,
                }
 
                v = IVAL(in->value_ctr.values[i].blob->data, 0);
+               vo = v;
 
-               c = dsdb_class_by_governsID_id(schema, v);
-               if (!c) {
+               /* convert remote ATTID to local ATTID */
+               if (!dsdb_syntax_attid_from_remote_attid(ctx, mem_ctx, v, &v)) {
+                       DEBUG(1,(__location__ ": Failed to map remote ATTID to local ATTID!\n"));
                        return WERR_FOOBAR;
                }
 
+               c = dsdb_class_by_governsID_id(ctx->schema, v);
+               if (!c) {
+                       int dbg_level = ctx->schema->resolving_in_progress ? 10 : 0;
+                       DEBUG(dbg_level,(__location__ ": %s unknown local governsID 0x%08X remote 0x%08X%s\n",
+                             attr->lDAPDisplayName, v, vo,
+                             ctx->schema->resolving_in_progress ? "resolving in progress" : ""));
+                       return WERR_DS_OBJ_CLASS_NOT_DEFINED;
+               }
+
                str = talloc_strdup(out->values, c->lDAPDisplayName);
                W_ERROR_HAVE_NO_MEMORY(str);
 
@@ -954,8 +1036,7 @@ static WERROR _dsdb_syntax_OID_obj_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR _dsdb_syntax_OID_attr_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                                  const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_OID_attr_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct drsuapi_DsReplicaAttribute *in,
                                                   TALLOC_CTX *mem_ctx,
@@ -972,25 +1053,38 @@ static WERROR _dsdb_syntax_OID_attr_drsuapi_to_ldb(struct ldb_context *ldb,
        W_ERROR_HAVE_NO_MEMORY(out->values);
 
        for (i=0; i < out->num_values; i++) {
-               uint32_t v;
+               uint32_t v, vo;
                const struct dsdb_attribute *a;
                const char *str;
 
                if (in->value_ctr.values[i].blob == NULL) {
+                       DEBUG(0, ("Attribute has no value\n"));
                        return WERR_FOOBAR;
                }
 
                if (in->value_ctr.values[i].blob->length != 4) {
+                       DEBUG(0, ("Attribute has a value with 0 length\n"));
                        return WERR_FOOBAR;
                }
 
                v = IVAL(in->value_ctr.values[i].blob->data, 0);
+               vo = v;
 
-               a = dsdb_attribute_by_attributeID_id(schema, v);
-               if (!a) {
+               /* convert remote ATTID to local ATTID */
+               if (!dsdb_syntax_attid_from_remote_attid(ctx, mem_ctx, v, &v)) {
+                       DEBUG(1,(__location__ ": Failed to map remote ATTID to local ATTID!\n"));
                        return WERR_FOOBAR;
                }
 
+               a = dsdb_attribute_by_attributeID_id(ctx->schema, v);
+               if (!a) {
+                       int dbg_level = ctx->schema->resolving_in_progress ? 10 : 0;
+                       DEBUG(dbg_level,(__location__ ": %s unknown local attributeID_id 0x%08X remote 0x%08X%s\n",
+                             attr->lDAPDisplayName, v, vo,
+                             ctx->schema->resolving_in_progress ? "resolving in progress" : ""));
+                       return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
+               }
+
                str = talloc_strdup(out->values, a->lDAPDisplayName);
                W_ERROR_HAVE_NO_MEMORY(str);
 
@@ -1001,14 +1095,21 @@ static WERROR _dsdb_syntax_OID_attr_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR _dsdb_syntax_OID_oid_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                                 const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_OID_oid_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                  const struct dsdb_attribute *attr,
                                                  const struct drsuapi_DsReplicaAttribute *in,
                                                  TALLOC_CTX *mem_ctx,
                                                  struct ldb_message_element *out)
 {
        unsigned int i;
+       const struct dsdb_schema_prefixmap *prefixmap;
+
+       if (ctx->pfm_remote != NULL) {
+               prefixmap = ctx->pfm_remote;
+       } else {
+               prefixmap = ctx->schema->prefixmap;
+       }
+       SMB_ASSERT(prefixmap);
 
        out->flags      = 0;
        out->name       = talloc_strdup(mem_ctx, attr->lDAPDisplayName);
@@ -1033,8 +1134,13 @@ static WERROR _dsdb_syntax_OID_oid_drsuapi_to_ldb(struct ldb_context *ldb,
 
                attid = IVAL(in->value_ctr.values[i].blob->data, 0);
 
-               status = dsdb_schema_pfm_oid_from_attid(schema->prefixmap, attid, out->values, &oid);
-               W_ERROR_NOT_OK_RETURN(status);
+               status = dsdb_schema_pfm_oid_from_attid(prefixmap, attid,
+                                                       out->values, &oid);
+               if (!W_ERROR_IS_OK(status)) {
+                       DEBUG(0,(__location__ ": Error: Unknown ATTID 0x%08X\n",
+                                attid));
+                       return status;
+               }
 
                out->values[i] = data_blob_string_const(oid);
        }
@@ -1042,17 +1148,17 @@ static WERROR _dsdb_syntax_OID_oid_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR _dsdb_syntax_auto_OID_ldb_to_drsuapi(struct ldb_context *ldb,
-                                                  const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_auto_OID_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct ldb_message_element *in,
                                                   TALLOC_CTX *mem_ctx,
-                                                 struct drsuapi_DsReplicaAttribute *out)
+                                                  struct drsuapi_DsReplicaAttribute *out)
 {
         unsigned int i;
         DATA_BLOB *blobs;
 
-        out->attid= attr->attributeID_id;
+        out->attid= dsdb_attribute_get_attid(attr,
+                                            ctx->is_schema_nc);
         out->value_ctr.num_values= in->num_values;
         out->value_ctr.values= talloc_array(mem_ctx,
                                             struct drsuapi_DsAttributeValue,
@@ -1076,16 +1182,16 @@ static WERROR _dsdb_syntax_auto_OID_ldb_to_drsuapi(struct ldb_context *ldb,
                   order to the order used in ldap */
                v = &in->values[(in->num_values-1)-i];
 
-               if ((obj_class = dsdb_class_by_lDAPDisplayName_ldb_val(schema, v))) {
+               if ((obj_class = dsdb_class_by_lDAPDisplayName_ldb_val(ctx->schema, v))) {
                        SIVAL(blobs[i].data, 0, obj_class->governsID_id);
-               } else if ((obj_attr = dsdb_attribute_by_lDAPDisplayName_ldb_val(schema, v))) {
+               } else if ((obj_attr = dsdb_attribute_by_lDAPDisplayName_ldb_val(ctx->schema, v))) {
                        SIVAL(blobs[i].data, 0, obj_attr->attributeID_id);
                } else {
                        uint32_t attid;
                        WERROR werr;
-                       werr = dsdb_schema_pfm_make_attid(schema->prefixmap,
-                                                         (const char *)v->data,
-                                                         &attid);
+                       werr = dsdb_schema_pfm_attid_from_oid(ctx->schema->prefixmap,
+                                                             (const char *)v->data,
+                                                             &attid);
                        W_ERROR_NOT_OK_RETURN(werr);
                        SIVAL(blobs[i].data, 0, attid);
                }
@@ -1096,8 +1202,7 @@ static WERROR _dsdb_syntax_auto_OID_ldb_to_drsuapi(struct ldb_context *ldb,
         return WERR_OK;
 }
 
-static WERROR _dsdb_syntax_OID_obj_ldb_to_drsuapi(struct ldb_context *ldb,
-                                                 const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_OID_obj_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                  const struct dsdb_attribute *attr,
                                                  const struct ldb_message_element *in,
                                                  TALLOC_CTX *mem_ctx,
@@ -1106,7 +1211,8 @@ static WERROR _dsdb_syntax_OID_obj_ldb_to_drsuapi(struct ldb_context *ldb,
         unsigned int i;
         DATA_BLOB *blobs;
 
-        out->attid= attr->attributeID_id;
+        out->attid= dsdb_attribute_get_attid(attr,
+                                            ctx->is_schema_nc);
         out->value_ctr.num_values= in->num_values;
         out->value_ctr.values= talloc_array(mem_ctx,
                                             struct drsuapi_DsAttributeValue,
@@ -1126,7 +1232,7 @@ static WERROR _dsdb_syntax_OID_obj_ldb_to_drsuapi(struct ldb_context *ldb,
 
                /* in DRS windows puts the classes in the opposite
                   order to the order used in ldap */
-               obj_class = dsdb_class_by_lDAPDisplayName(schema,
+               obj_class = dsdb_class_by_lDAPDisplayName(ctx->schema,
                                                          (const char *)in->values[(in->num_values-1)-i].data);
                if (!obj_class) {
                        return WERR_FOOBAR;
@@ -1138,8 +1244,7 @@ static WERROR _dsdb_syntax_OID_obj_ldb_to_drsuapi(struct ldb_context *ldb,
         return WERR_OK;
 }
 
-static WERROR _dsdb_syntax_OID_attr_ldb_to_drsuapi(struct ldb_context *ldb,
-                                                  const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_OID_attr_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct ldb_message_element *in,
                                                   TALLOC_CTX *mem_ctx,
@@ -1148,7 +1253,8 @@ static WERROR _dsdb_syntax_OID_attr_ldb_to_drsuapi(struct ldb_context *ldb,
         unsigned int i;
         DATA_BLOB *blobs;
 
-        out->attid= attr->attributeID_id;
+        out->attid= dsdb_attribute_get_attid(attr,
+                                            ctx->is_schema_nc);
         out->value_ctr.num_values= in->num_values;
         out->value_ctr.values= talloc_array(mem_ctx,
                                             struct drsuapi_DsAttributeValue,
@@ -1166,8 +1272,9 @@ static WERROR _dsdb_syntax_OID_attr_ldb_to_drsuapi(struct ldb_context *ldb,
                blobs[i] = data_blob_talloc(blobs, NULL, 4);
                W_ERROR_HAVE_NO_MEMORY(blobs[i].data);
 
-               obj_attr = dsdb_attribute_by_lDAPDisplayName(schema, (const char *)in->values[i].data);
+               obj_attr = dsdb_attribute_by_lDAPDisplayName(ctx->schema, (const char *)in->values[i].data);
                if (!obj_attr) {
+                       DEBUG(0, ("Unable to find attribute %s in the schema\n", (const char *)in->values[i].data));
                        return WERR_FOOBAR;
                }
                SIVAL(blobs[i].data, 0, obj_attr->attributeID_id);
@@ -1177,8 +1284,7 @@ static WERROR _dsdb_syntax_OID_attr_ldb_to_drsuapi(struct ldb_context *ldb,
         return WERR_OK;
 }
 
-static WERROR _dsdb_syntax_OID_oid_ldb_to_drsuapi(struct ldb_context *ldb,
-                                                 const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_OID_oid_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                  const struct dsdb_attribute *attr,
                                                  const struct ldb_message_element *in,
                                                  TALLOC_CTX *mem_ctx,
@@ -1187,7 +1293,8 @@ static WERROR _dsdb_syntax_OID_oid_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       out->attid= attr->attributeID_id;
+       out->attid= dsdb_attribute_get_attid(attr,
+                                            ctx->is_schema_nc);
        out->value_ctr.num_values= in->num_values;
        out->value_ctr.values= talloc_array(mem_ctx,
                                            struct drsuapi_DsAttributeValue,
@@ -1206,9 +1313,9 @@ static WERROR _dsdb_syntax_OID_oid_ldb_to_drsuapi(struct ldb_context *ldb,
                blobs[i] = data_blob_talloc(blobs, NULL, 4);
                W_ERROR_HAVE_NO_MEMORY(blobs[i].data);
 
-               status = dsdb_schema_pfm_make_attid(schema->prefixmap,
-                                                   (const char *)in->values[i].data,
-                                                   &attid);
+               status = dsdb_schema_pfm_attid_from_oid(ctx->schema->prefixmap,
+                                                       (const char *)in->values[i].data,
+                                                       &attid);
                W_ERROR_NOT_OK_RETURN(status);
 
                SIVAL(blobs[i].data, 0, attid);
@@ -1217,8 +1324,7 @@ static WERROR _dsdb_syntax_OID_oid_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_OID_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                            const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_OID_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                             const struct dsdb_attribute *attr,
                                             const struct drsuapi_DsReplicaAttribute *in,
                                             TALLOC_CTX *mem_ctx,
@@ -1227,83 +1333,124 @@ static WERROR dsdb_syntax_OID_drsuapi_to_ldb(struct ldb_context *ldb,
        WERROR werr;
 
        switch (attr->attributeID_id) {
-       case DRSUAPI_ATTRIBUTE_objectClass:
-       case DRSUAPI_ATTRIBUTE_subClassOf:
-       case DRSUAPI_ATTRIBUTE_auxiliaryClass:
-       case DRSUAPI_ATTRIBUTE_systemAuxiliaryClass:
-       case DRSUAPI_ATTRIBUTE_systemPossSuperiors:
-       case DRSUAPI_ATTRIBUTE_possSuperiors:
-               werr = _dsdb_syntax_OID_obj_drsuapi_to_ldb(ldb, schema, attr, in, mem_ctx, out);
+       case DRSUAPI_ATTID_objectClass:
+       case DRSUAPI_ATTID_subClassOf:
+       case DRSUAPI_ATTID_auxiliaryClass:
+       case DRSUAPI_ATTID_systemAuxiliaryClass:
+       case DRSUAPI_ATTID_systemPossSuperiors:
+       case DRSUAPI_ATTID_possSuperiors:
+               werr = _dsdb_syntax_OID_obj_drsuapi_to_ldb(ctx, attr, in, mem_ctx, out);
                break;
-       case DRSUAPI_ATTRIBUTE_systemMustContain:
-       case DRSUAPI_ATTRIBUTE_systemMayContain:        
-       case DRSUAPI_ATTRIBUTE_mustContain:
-       case DRSUAPI_ATTRIBUTE_rDNAttId:
-       case DRSUAPI_ATTRIBUTE_transportAddressAttribute:
-       case DRSUAPI_ATTRIBUTE_mayContain:
-               werr = _dsdb_syntax_OID_attr_drsuapi_to_ldb(ldb, schema, attr, in, mem_ctx, out);
+       case DRSUAPI_ATTID_systemMustContain:
+       case DRSUAPI_ATTID_systemMayContain:
+       case DRSUAPI_ATTID_mustContain:
+       case DRSUAPI_ATTID_rDNAttId:
+       case DRSUAPI_ATTID_transportAddressAttribute:
+       case DRSUAPI_ATTID_mayContain:
+               werr = _dsdb_syntax_OID_attr_drsuapi_to_ldb(ctx, attr, in, mem_ctx, out);
                break;
-       case DRSUAPI_ATTRIBUTE_governsID:
-       case DRSUAPI_ATTRIBUTE_attributeID:
-       case DRSUAPI_ATTRIBUTE_attributeSyntax:
-               werr = _dsdb_syntax_OID_oid_drsuapi_to_ldb(ldb, schema, attr, in, mem_ctx, out);
+       case DRSUAPI_ATTID_governsID:
+       case DRSUAPI_ATTID_attributeID:
+       case DRSUAPI_ATTID_attributeSyntax:
+               werr = _dsdb_syntax_OID_oid_drsuapi_to_ldb(ctx, attr, in, mem_ctx, out);
                break;
        default:
                DEBUG(0,(__location__ ": Unknown handling for attributeID_id for %s\n",
                         attr->lDAPDisplayName));
-               return _dsdb_syntax_auto_OID_drsuapi_to_ldb(ldb, schema, attr, in, mem_ctx, out);
+               return _dsdb_syntax_auto_OID_drsuapi_to_ldb(ctx, attr, in, mem_ctx, out);
        }
 
        /* When we are doing the vampire of a schema, we don't want
-        * the inablity to reference an OID to get in the way.
+        * the inability to reference an OID to get in the way.
         * Otherwise, we won't get the new schema with which to
         * understand this */
-       if (!W_ERROR_IS_OK(werr) && schema->relax_OID_conversions) {
-               return _dsdb_syntax_OID_oid_drsuapi_to_ldb(ldb, schema, attr, in, mem_ctx, out);
+       if (!W_ERROR_IS_OK(werr) && ctx->schema->relax_OID_conversions) {
+               return _dsdb_syntax_OID_oid_drsuapi_to_ldb(ctx, attr, in, mem_ctx, out);
        }
        return werr;
 }
 
-static WERROR dsdb_syntax_OID_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                            const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_OID_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                             const struct dsdb_attribute *attr,
                                             const struct ldb_message_element *in,
                                             TALLOC_CTX *mem_ctx,
                                             struct drsuapi_DsReplicaAttribute *out)
 {
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        switch (attr->attributeID_id) {
-       case DRSUAPI_ATTRIBUTE_objectClass:
-       case DRSUAPI_ATTRIBUTE_subClassOf:
-       case DRSUAPI_ATTRIBUTE_auxiliaryClass:
-       case DRSUAPI_ATTRIBUTE_systemAuxiliaryClass:
-       case DRSUAPI_ATTRIBUTE_systemPossSuperiors:
-       case DRSUAPI_ATTRIBUTE_possSuperiors:
-               return _dsdb_syntax_OID_obj_ldb_to_drsuapi(ldb, schema, attr, in, mem_ctx, out);
-       case DRSUAPI_ATTRIBUTE_systemMustContain:
-       case DRSUAPI_ATTRIBUTE_systemMayContain:        
-       case DRSUAPI_ATTRIBUTE_mustContain:
-       case DRSUAPI_ATTRIBUTE_rDNAttId:
-       case DRSUAPI_ATTRIBUTE_transportAddressAttribute:
-       case DRSUAPI_ATTRIBUTE_mayContain:
-               return _dsdb_syntax_OID_attr_ldb_to_drsuapi(ldb, schema, attr, in, mem_ctx, out);
-       case DRSUAPI_ATTRIBUTE_governsID:
-       case DRSUAPI_ATTRIBUTE_attributeID:
-       case DRSUAPI_ATTRIBUTE_attributeSyntax:
-               return _dsdb_syntax_OID_oid_ldb_to_drsuapi(ldb, schema, attr, in, mem_ctx, out);
+       case DRSUAPI_ATTID_objectClass:
+       case DRSUAPI_ATTID_subClassOf:
+       case DRSUAPI_ATTID_auxiliaryClass:
+       case DRSUAPI_ATTID_systemAuxiliaryClass:
+       case DRSUAPI_ATTID_systemPossSuperiors:
+       case DRSUAPI_ATTID_possSuperiors:
+               return _dsdb_syntax_OID_obj_ldb_to_drsuapi(ctx, attr, in, mem_ctx, out);
+       case DRSUAPI_ATTID_systemMustContain:
+       case DRSUAPI_ATTID_systemMayContain:
+       case DRSUAPI_ATTID_mustContain:
+       case DRSUAPI_ATTID_rDNAttId:
+       case DRSUAPI_ATTID_transportAddressAttribute:
+       case DRSUAPI_ATTID_mayContain:
+               return _dsdb_syntax_OID_attr_ldb_to_drsuapi(ctx, attr, in, mem_ctx, out);
+       case DRSUAPI_ATTID_governsID:
+       case DRSUAPI_ATTID_attributeID:
+       case DRSUAPI_ATTID_attributeSyntax:
+               return _dsdb_syntax_OID_oid_ldb_to_drsuapi(ctx, attr, in, mem_ctx, out);
        }
 
        DEBUG(0,(__location__ ": Unknown handling for attributeID_id for %s\n",
                 attr->lDAPDisplayName));
 
-       return _dsdb_syntax_auto_OID_ldb_to_drsuapi(ldb, schema, attr, in, mem_ctx, out);
+       return _dsdb_syntax_auto_OID_ldb_to_drsuapi(ctx, attr, in, mem_ctx, out);
 }
 
-static WERROR dsdb_syntax_OID_validate_ldb(struct ldb_context *ldb,
-                                          const struct dsdb_schema *schema,
+static WERROR _dsdb_syntax_OID_validate_numericoid(const struct dsdb_syntax_ctx *ctx,
+                                                  const struct dsdb_attribute *attr,
+                                                  const struct ldb_message_element *in)
+{
+       unsigned int i;
+       TALLOC_CTX *tmp_ctx;
+
+       tmp_ctx = talloc_new(ctx->ldb);
+       W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
+
+       for (i=0; i < in->num_values; i++) {
+               DATA_BLOB blob;
+               char *oid_out;
+               const char *oid = (const char*)in->values[i].data;
+
+               if (in->values[i].length == 0) {
+                       talloc_free(tmp_ctx);
+                       return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
+               }
+
+               if (!ber_write_OID_String(tmp_ctx, &blob, oid)) {
+                       DEBUG(0,("ber_write_OID_String() failed for %s\n", oid));
+                       talloc_free(tmp_ctx);
+                       return WERR_INVALID_PARAMETER;
+               }
+
+               if (!ber_read_OID_String(tmp_ctx, blob, &oid_out)) {
+                       DEBUG(0,("ber_read_OID_String() failed for %s\n",
+                                hex_encode_talloc(tmp_ctx, blob.data, blob.length)));
+                       talloc_free(tmp_ctx);
+                       return WERR_INVALID_PARAMETER;
+               }
+
+               if (strcmp(oid, oid_out) != 0) {
+                       talloc_free(tmp_ctx);
+                       return WERR_INVALID_PARAMETER;
+               }
+       }
+
+       talloc_free(tmp_ctx);
+       return WERR_OK;
+}
+
+static WERROR dsdb_syntax_OID_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                           const struct dsdb_attribute *attr,
                                           const struct ldb_message_element *in)
 {
@@ -1312,21 +1459,25 @@ static WERROR dsdb_syntax_OID_validate_ldb(struct ldb_context *ldb,
        struct ldb_message_element ldb_tmp;
        TALLOC_CTX *tmp_ctx;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
+       }
+
+       switch (attr->attributeID_id) {
+       case DRSUAPI_ATTID_governsID:
+       case DRSUAPI_ATTID_attributeID:
+       case DRSUAPI_ATTID_attributeSyntax:
+               return _dsdb_syntax_OID_validate_numericoid(ctx, attr, in);
        }
 
        /*
         * TODO: optimize and verify this code
         */
 
-       tmp_ctx = talloc_new(ldb);
-       if (tmp_ctx == NULL) {
-               return WERR_NOMEM;
-       }
+       tmp_ctx = talloc_new(ctx->ldb);
+       W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
 
-       status = dsdb_syntax_OID_ldb_to_drsuapi(ldb,
-                                               schema,
+       status = dsdb_syntax_OID_ldb_to_drsuapi(ctx,
                                                attr,
                                                in,
                                                tmp_ctx,
@@ -1336,8 +1487,7 @@ static WERROR dsdb_syntax_OID_validate_ldb(struct ldb_context *ldb,
                return status;
        }
 
-       status = dsdb_syntax_OID_drsuapi_to_ldb(ldb,
-                                               schema,
+       status = dsdb_syntax_OID_drsuapi_to_ldb(ctx,
                                                attr,
                                                &drs_tmp,
                                                tmp_ctx,
@@ -1351,8 +1501,7 @@ static WERROR dsdb_syntax_OID_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_UNICODE_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                                const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_UNICODE_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                 const struct dsdb_attribute *attr,
                                                 const struct drsuapi_DsReplicaAttribute *in,
                                                 TALLOC_CTX *mem_ctx,
@@ -1369,6 +1518,7 @@ static WERROR dsdb_syntax_UNICODE_drsuapi_to_ldb(struct ldb_context *ldb,
        W_ERROR_HAVE_NO_MEMORY(out->values);
 
        for (i=0; i < out->num_values; i++) {
+               size_t converted_size = 0;
                char *str;
 
                if (in->value_ctr.values[i].blob == NULL) {
@@ -1379,22 +1529,21 @@ static WERROR dsdb_syntax_UNICODE_drsuapi_to_ldb(struct ldb_context *ldb,
                        return WERR_FOOBAR;
                }
 
-               if (!convert_string_talloc(out->values, 
-                                                                       CH_UTF16, CH_UNIX,
-                                           in->value_ctr.values[i].blob->data,
-                                           in->value_ctr.values[i].blob->length,
-                                           (void **)&str, NULL, false)) {
+               if (!convert_string_talloc(out->values,
+                                          CH_UTF16, CH_UNIX,
+                                          in->value_ctr.values[i].blob->data,
+                                          in->value_ctr.values[i].blob->length,
+                                          (void **)&str, &converted_size)) {
                        return WERR_FOOBAR;
                }
 
-               out->values[i] = data_blob_string_const(str);
+               out->values[i] = data_blob_const(str, converted_size);
        }
 
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_UNICODE_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                                const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_UNICODE_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                 const struct dsdb_attribute *attr,
                                                 const struct ldb_message_element *in,
                                                 TALLOC_CTX *mem_ctx,
@@ -1403,11 +1552,12 @@ static WERROR dsdb_syntax_UNICODE_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -1421,18 +1571,17 @@ static WERROR dsdb_syntax_UNICODE_ldb_to_drsuapi(struct ldb_context *ldb,
                out->value_ctr.values[i].blob   = &blobs[i];
 
                if (!convert_string_talloc(blobs,
-                       CH_UNIX, CH_UTF16,
-                       in->values[i].data, in->values[i].length,
-                       (void **)&blobs[i].data, &blobs[i].length, false)) {
-                               return WERR_FOOBAR;
+                                          CH_UNIX, CH_UTF16,
+                                          in->values[i].data, in->values[i].length,
+                                          (void **)&blobs[i].data, &blobs[i].length)) {
+                       return WERR_FOOBAR;
                }
        }
 
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_UNICODE_validate_one_val(struct ldb_context *ldb,
-                                                  const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_UNICODE_validate_one_val(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct ldb_val *val)
 {
@@ -1440,16 +1589,16 @@ static WERROR dsdb_syntax_UNICODE_validate_one_val(struct ldb_context *ldb,
        size_t size;
        bool ok;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       ok = convert_string_talloc(ldb,
-                                              CH_UNIX, CH_UTF16,
-                                              val->data,
-                                              val->length,
-                                              (void **)&dst,
-                                              &size, false);
+       ok = convert_string_talloc(ctx->ldb,
+                                  CH_UNIX, CH_UTF16,
+                                  val->data,
+                                  val->length,
+                                  (void **)&dst,
+                                  &size);
        TALLOC_FREE(dst);
        if (!ok) {
                return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
@@ -1470,16 +1619,15 @@ static WERROR dsdb_syntax_UNICODE_validate_one_val(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_UNICODE_validate_ldb(struct ldb_context *ldb,
-                                              const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_UNICODE_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                               const struct dsdb_attribute *attr,
                                               const struct ldb_message_element *in)
 {
        WERROR status;
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
@@ -1487,8 +1635,7 @@ static WERROR dsdb_syntax_UNICODE_validate_ldb(struct ldb_context *ldb,
                        return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
                }
 
-               status = dsdb_syntax_UNICODE_validate_one_val(ldb,
-                                                             schema,
+               status = dsdb_syntax_UNICODE_validate_one_val(ctx,
                                                              attr,
                                                              &in->values[i]);
                if (!W_ERROR_IS_OK(status)) {
@@ -1499,9 +1646,9 @@ static WERROR dsdb_syntax_UNICODE_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-WERROR dsdb_syntax_one_DN_drsuapi_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context *ldb, 
-                                        const struct dsdb_syntax *syntax, 
-                                        const DATA_BLOB *in, DATA_BLOB *out)
+static WERROR dsdb_syntax_one_DN_drsuapi_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context *ldb,
+                                               const struct dsdb_syntax *syntax,
+                                               const DATA_BLOB *in, DATA_BLOB *out)
 {
        struct drsuapi_DsReplicaObjectIdentifier3 id3;
        enum ndr_err_code ndr_err;
@@ -1514,18 +1661,18 @@ WERROR dsdb_syntax_one_DN_drsuapi_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context
        if (!tmp_ctx) {
                W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
        }
-       
+
        if (in == NULL) {
                talloc_free(tmp_ctx);
                return WERR_FOOBAR;
        }
-       
+
        if (in->length == 0) {
                talloc_free(tmp_ctx);
                return WERR_FOOBAR;
        }
-       
-       
+
+
        /* windows sometimes sends an extra two pad bytes here */
        ndr_err = ndr_pull_struct_blob(in,
                                       tmp_ctx, &id3,
@@ -1535,7 +1682,7 @@ WERROR dsdb_syntax_one_DN_drsuapi_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context
                talloc_free(tmp_ctx);
                return ntstatus_to_werror(status);
        }
-       
+
        dn = ldb_dn_new(tmp_ctx, ldb, id3.dn);
        if (!dn) {
                talloc_free(tmp_ctx);
@@ -1549,7 +1696,7 @@ WERROR dsdb_syntax_one_DN_drsuapi_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context
                        talloc_free(tmp_ctx);
                        return ntstatus_to_werror(status);
                }
-       
+
                ret = ldb_dn_set_extended_component(dn, "GUID", &guid_blob);
                if (ret != LDB_SUCCESS) {
                        talloc_free(tmp_ctx);
@@ -1557,7 +1704,7 @@ WERROR dsdb_syntax_one_DN_drsuapi_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context
                }
                talloc_free(guid_blob.data);
        }
-       
+
        if (id3.__ndr_size_sid) {
                DATA_BLOB sid_blob;
                ndr_err = ndr_push_struct_blob(&sid_blob, tmp_ctx, &id3.sid,
@@ -1567,21 +1714,20 @@ WERROR dsdb_syntax_one_DN_drsuapi_to_ldb(TALLOC_CTX *mem_ctx, struct ldb_context
                        talloc_free(tmp_ctx);
                        return ntstatus_to_werror(status);
                }
-               
+
                ret = ldb_dn_set_extended_component(dn, "SID", &sid_blob);
                if (ret != LDB_SUCCESS) {
                        talloc_free(tmp_ctx);
                        return WERR_FOOBAR;
                }
        }
-       
+
        *out = data_blob_string_const(ldb_dn_get_extended_linearized(mem_ctx, dn, 1));
        talloc_free(tmp_ctx);
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DN_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                           const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                            const struct dsdb_attribute *attr,
                                            const struct drsuapi_DsReplicaAttribute *in,
                                            TALLOC_CTX *mem_ctx,
@@ -1598,20 +1744,19 @@ static WERROR dsdb_syntax_DN_drsuapi_to_ldb(struct ldb_context *ldb,
        W_ERROR_HAVE_NO_MEMORY(out->values);
 
        for (i=0; i < out->num_values; i++) {
-               WERROR status = dsdb_syntax_one_DN_drsuapi_to_ldb(out->values, ldb, attr->syntax, 
-                                                                 in->value_ctr.values[i].blob, 
+               WERROR status = dsdb_syntax_one_DN_drsuapi_to_ldb(out->values, ctx->ldb, attr->syntax,
+                                                                 in->value_ctr.values[i].blob,
                                                                  &out->values[i]);
                if (!W_ERROR_IS_OK(status)) {
                        return status;
                }
-                                                 
+
        }
 
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DN_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                           const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                            const struct dsdb_attribute *attr,
                                            const struct ldb_message_element *in,
                                            TALLOC_CTX *mem_ctx,
@@ -1620,11 +1765,12 @@ static WERROR dsdb_syntax_DN_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -1645,7 +1791,7 @@ static WERROR dsdb_syntax_DN_ldb_to_drsuapi(struct ldb_context *ldb,
 
                out->value_ctr.values[i].blob   = &blobs[i];
 
-               dn = ldb_dn_from_ldb_val(tmp_ctx, ldb, &in->values[i]);
+               dn = ldb_dn_from_ldb_val(tmp_ctx, ctx->ldb, &in->values[i]);
 
                W_ERROR_HAVE_NO_MEMORY(dn);
 
@@ -1679,8 +1825,7 @@ static WERROR dsdb_syntax_DN_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DN_validate_one_val(struct ldb_context *ldb,
-                                             const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_validate_one_val(const struct dsdb_syntax_ctx *ctx,
                                              const struct dsdb_attribute *attr,
                                              const struct ldb_val *val,
                                              TALLOC_CTX *mem_ctx,
@@ -1702,11 +1847,11 @@ static WERROR dsdb_syntax_DN_validate_one_val(struct ldb_context *ldb,
 
        W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, val,
+       dsdb_dn = dsdb_dn_parse(tmp_ctx, ctx->ldb, val,
                                attr->syntax->ldap_oid);
        if (!dsdb_dn) {
                talloc_free(tmp_ctx);
@@ -1717,7 +1862,7 @@ static WERROR dsdb_syntax_DN_validate_one_val(struct ldb_context *ldb,
        dn2 = ldb_dn_copy(tmp_ctx, dn);
        if (dn == NULL) {
                talloc_free(tmp_ctx);
-               return WERR_NOMEM;
+               return WERR_NOT_ENOUGH_MEMORY;
        }
 
        num_components = ldb_dn_get_comp_num(dn);
@@ -1779,25 +1924,23 @@ static WERROR dsdb_syntax_DN_validate_one_val(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DN_validate_ldb(struct ldb_context *ldb,
-                                         const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                          const struct dsdb_attribute *attr,
                                          const struct ldb_message_element *in)
 {
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
                WERROR status;
                struct dsdb_dn *dsdb_dn;
-               TALLOC_CTX *tmp_ctx = talloc_new(ldb);
+               TALLOC_CTX *tmp_ctx = talloc_new(ctx->ldb);
                W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
 
-               status = dsdb_syntax_DN_validate_one_val(ldb,
-                                                        schema,
+               status = dsdb_syntax_DN_validate_one_val(ctx,
                                                         attr,
                                                         &in->values[i],
                                                         tmp_ctx, &dsdb_dn);
@@ -1817,8 +1960,7 @@ static WERROR dsdb_syntax_DN_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DN_BINARY_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                                  const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_BINARY_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct drsuapi_DsReplicaAttribute *in,
                                                   TALLOC_CTX *mem_ctx,
@@ -1857,7 +1999,7 @@ static WERROR dsdb_syntax_DN_BINARY_drsuapi_to_ldb(struct ldb_context *ldb,
                        return WERR_FOOBAR;
                }
 
-               
+
                /* windows sometimes sends an extra two pad bytes here */
                ndr_err = ndr_pull_struct_blob(in->value_ctr.values[i].blob,
                                               tmp_ctx, &id3,
@@ -1868,27 +2010,28 @@ static WERROR dsdb_syntax_DN_BINARY_drsuapi_to_ldb(struct ldb_context *ldb,
                        return ntstatus_to_werror(status);
                }
 
-               dn = ldb_dn_new(tmp_ctx, ldb, id3.dn);
+               dn = ldb_dn_new(tmp_ctx, ctx->ldb, id3.dn);
                if (!dn) {
                        talloc_free(tmp_ctx);
                        /* If this fails, it must be out of memory, as it does not do much parsing */
                        W_ERROR_HAVE_NO_MEMORY(dn);
                }
 
-               status = GUID_to_ndr_blob(&id3.guid, tmp_ctx, &guid_blob);
-               if (!NT_STATUS_IS_OK(status)) {
-                       talloc_free(tmp_ctx);
-                       return ntstatus_to_werror(status);
-               }
+               if (!GUID_all_zero(&id3.guid)) {
+                       status = GUID_to_ndr_blob(&id3.guid, tmp_ctx, &guid_blob);
+                       if (!NT_STATUS_IS_OK(status)) {
+                               talloc_free(tmp_ctx);
+                               return ntstatus_to_werror(status);
+                       }
 
-               ret = ldb_dn_set_extended_component(dn, "GUID", &guid_blob);
-               if (ret != LDB_SUCCESS) {
-                       talloc_free(tmp_ctx);
-                       return WERR_FOOBAR;
+                       ret = ldb_dn_set_extended_component(dn, "GUID", &guid_blob);
+                       if (ret != LDB_SUCCESS) {
+                               talloc_free(tmp_ctx);
+                               return WERR_FOOBAR;
+                       }
+                       talloc_free(guid_blob.data);
                }
 
-               talloc_free(guid_blob.data);
-
                if (id3.__ndr_size_sid) {
                        DATA_BLOB sid_blob;
                        ndr_err = ndr_push_struct_blob(&sid_blob, tmp_ctx, &id3.sid,
@@ -1920,8 +2063,7 @@ static WERROR dsdb_syntax_DN_BINARY_drsuapi_to_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DN_BINARY_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                                  const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_BINARY_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct ldb_message_element *in,
                                                   TALLOC_CTX *mem_ctx,
@@ -1930,11 +2072,12 @@ static WERROR dsdb_syntax_DN_BINARY_ldb_to_drsuapi(struct ldb_context *ldb,
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -1956,7 +2099,7 @@ static WERROR dsdb_syntax_DN_BINARY_ldb_to_drsuapi(struct ldb_context *ldb,
 
                out->value_ctr.values[i].blob   = &blobs[i];
 
-               dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &in->values[i], attr->syntax->ldap_oid);
+               dsdb_dn = dsdb_dn_parse(tmp_ctx, ctx->ldb, &in->values[i], attr->syntax->ldap_oid);
 
                if (!dsdb_dn) {
                        talloc_free(tmp_ctx);
@@ -1974,8 +2117,8 @@ static WERROR dsdb_syntax_DN_BINARY_ldb_to_drsuapi(struct ldb_context *ldb,
 
                sid_blob = ldb_dn_get_extended_component(dsdb_dn->dn, "SID");
                if (sid_blob) {
-                       
-                       ndr_err = ndr_pull_struct_blob_all(sid_blob, 
+
+                       ndr_err = ndr_pull_struct_blob_all(sid_blob,
                                                           tmp_ctx, &id3.sid,
                                                           (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
                        if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
@@ -2002,25 +2145,23 @@ static WERROR dsdb_syntax_DN_BINARY_ldb_to_drsuapi(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DN_BINARY_validate_ldb(struct ldb_context *ldb,
-                                                const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_BINARY_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                                 const struct dsdb_attribute *attr,
                                                 const struct ldb_message_element *in)
 {
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
                WERROR status;
                struct dsdb_dn *dsdb_dn;
-               TALLOC_CTX *tmp_ctx = talloc_new(ldb);
+               TALLOC_CTX *tmp_ctx = talloc_new(ctx->ldb);
                W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
 
-               status = dsdb_syntax_DN_validate_one_val(ldb,
-                                                        schema,
+               status = dsdb_syntax_DN_validate_one_val(ctx,
                                                         attr,
                                                         &in->values[i],
                                                         tmp_ctx, &dsdb_dn);
@@ -2034,8 +2175,7 @@ static WERROR dsdb_syntax_DN_BINARY_validate_ldb(struct ldb_context *ldb,
                        return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
                }
 
-               status = dsdb_syntax_DATA_BLOB_validate_one_val(ldb,
-                                                               schema,
+               status = dsdb_syntax_DATA_BLOB_validate_one_val(ctx,
                                                                attr,
                                                                &dsdb_dn->extra_part);
                if (!W_ERROR_IS_OK(status)) {
@@ -2049,55 +2189,49 @@ static WERROR dsdb_syntax_DN_BINARY_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_DN_STRING_drsuapi_to_ldb(struct ldb_context *ldb,
-                                                  const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_STRING_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct drsuapi_DsReplicaAttribute *in,
                                                   TALLOC_CTX *mem_ctx,
                                                   struct ldb_message_element *out)
 {
-       return dsdb_syntax_DN_BINARY_drsuapi_to_ldb(ldb,
-                                                   schema,
+       return dsdb_syntax_DN_BINARY_drsuapi_to_ldb(ctx,
                                                    attr,
                                                    in,
                                                    mem_ctx,
                                                    out);
 }
 
-static WERROR dsdb_syntax_DN_STRING_ldb_to_drsuapi(struct ldb_context *ldb,
-                                                  const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_STRING_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                   const struct dsdb_attribute *attr,
                                                   const struct ldb_message_element *in,
                                                   TALLOC_CTX *mem_ctx,
                                                   struct drsuapi_DsReplicaAttribute *out)
 {
-       return dsdb_syntax_DN_BINARY_ldb_to_drsuapi(ldb,
-                                                   schema,
+       return dsdb_syntax_DN_BINARY_ldb_to_drsuapi(ctx,
                                                    attr,
                                                    in,
                                                    mem_ctx,
                                                    out);
 }
 
-static WERROR dsdb_syntax_DN_STRING_validate_ldb(struct ldb_context *ldb,
-                                                const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_DN_STRING_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                                 const struct dsdb_attribute *attr,
                                                 const struct ldb_message_element *in)
 {
        unsigned int i;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
        for (i=0; i < in->num_values; i++) {
                WERROR status;
                struct dsdb_dn *dsdb_dn;
-               TALLOC_CTX *tmp_ctx = talloc_new(ldb);
+               TALLOC_CTX *tmp_ctx = talloc_new(ctx->ldb);
                W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
 
-               status = dsdb_syntax_DN_validate_one_val(ldb,
-                                                        schema,
+               status = dsdb_syntax_DN_validate_one_val(ctx,
                                                         attr,
                                                         &in->values[i],
                                                         tmp_ctx, &dsdb_dn);
@@ -2111,8 +2245,7 @@ static WERROR dsdb_syntax_DN_STRING_validate_ldb(struct ldb_context *ldb,
                        return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;
                }
 
-               status = dsdb_syntax_UNICODE_validate_one_val(ldb,
-                                                             schema,
+               status = dsdb_syntax_UNICODE_validate_one_val(ctx,
                                                              attr,
                                                              &dsdb_dn->extra_part);
                if (!W_ERROR_IS_OK(status)) {
@@ -2126,8 +2259,7 @@ static WERROR dsdb_syntax_DN_STRING_validate_ldb(struct ldb_context *ldb,
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_PRESENTATION_ADDRESS_drsuapi_to_ldb(struct ldb_context *ldb, 
-                                                             const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_PRESENTATION_ADDRESS_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ctx,
                                                              const struct dsdb_attribute *attr,
                                                              const struct drsuapi_DsReplicaAttribute *in,
                                                              TALLOC_CTX *mem_ctx,
@@ -2145,6 +2277,7 @@ static WERROR dsdb_syntax_PRESENTATION_ADDRESS_drsuapi_to_ldb(struct ldb_context
 
        for (i=0; i < out->num_values; i++) {
                size_t len;
+               size_t converted_size = 0;
                char *str;
 
                if (in->value_ctr.values[i].blob == NULL) {
@@ -2162,9 +2295,9 @@ static WERROR dsdb_syntax_PRESENTATION_ADDRESS_drsuapi_to_ldb(struct ldb_context
                }
 
                if (!convert_string_talloc(out->values, CH_UTF16, CH_UNIX,
-                                           in->value_ctr.values[i].blob->data+4,
-                                           in->value_ctr.values[i].blob->length-4,
-                                           (void **)&str, NULL, false)) {
+                                          in->value_ctr.values[i].blob->data+4,
+                                          in->value_ctr.values[i].blob->length-4,
+                                          (void **)&str, &converted_size)) {
                        return WERR_FOOBAR;
                }
 
@@ -2174,8 +2307,7 @@ static WERROR dsdb_syntax_PRESENTATION_ADDRESS_drsuapi_to_ldb(struct ldb_context
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_PRESENTATION_ADDRESS_ldb_to_drsuapi(struct ldb_context *ldb, 
-                                                             const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_PRESENTATION_ADDRESS_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ctx,
                                                              const struct dsdb_attribute *attr,
                                                              const struct ldb_message_element *in,
                                                              TALLOC_CTX *mem_ctx,
@@ -2184,11 +2316,12 @@ static WERROR dsdb_syntax_PRESENTATION_ADDRESS_ldb_to_drsuapi(struct ldb_context
        unsigned int i;
        DATA_BLOB *blobs;
 
-       if (attr->attributeID_id == 0xFFFFFFFF) {
-               return WERR_FOOBAR;
+       if (attr->attributeID_id == DRSUAPI_ATTID_INVALID) {
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       out->attid                      = attr->attributeID_id;
+       out->attid                      = dsdb_attribute_get_attid(attr,
+                                                                  ctx->is_schema_nc);
        out->value_ctr.num_values       = in->num_values;
        out->value_ctr.values           = talloc_array(mem_ctx,
                                                       struct drsuapi_DsAttributeValue,
@@ -2205,9 +2338,9 @@ static WERROR dsdb_syntax_PRESENTATION_ADDRESS_ldb_to_drsuapi(struct ldb_context
                out->value_ctr.values[i].blob   = &blobs[i];
 
                if (!convert_string_talloc(blobs, CH_UNIX, CH_UTF16,
-                                           in->values[i].data,
-                                           in->values[i].length,
-                                           (void **)&data, &ret, false)) {
+                                          in->values[i].data,
+                                          in->values[i].length,
+                                          (void **)&data, &ret)) {
                        return WERR_FOOBAR;
                }
 
@@ -2225,13 +2358,11 @@ static WERROR dsdb_syntax_PRESENTATION_ADDRESS_ldb_to_drsuapi(struct ldb_context
        return WERR_OK;
 }
 
-static WERROR dsdb_syntax_PRESENTATION_ADDRESS_validate_ldb(struct ldb_context *ldb,
-                                                           const struct dsdb_schema *schema,
+static WERROR dsdb_syntax_PRESENTATION_ADDRESS_validate_ldb(const struct dsdb_syntax_ctx *ctx,
                                                            const struct dsdb_attribute *attr,
                                                            const struct ldb_message_element *in)
 {
-       return dsdb_syntax_UNICODE_validate_ldb(ldb,
-                                               schema,
+       return dsdb_syntax_UNICODE_validate_ldb(ctx,
                                                attr,
                                                in);
 }
@@ -2248,7 +2379,8 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .ldb_to_drsuapi         = dsdb_syntax_BOOL_ldb_to_drsuapi,
                .validate_ldb           = dsdb_syntax_BOOL_validate_ldb,
                .equality               = "booleanMatch",
-               .comment                = "Boolean" 
+               .comment                = "Boolean",
+               .auto_normalise         = true
        },{
                .name                   = "Integer",
                .ldap_oid               = LDB_SYNTAX_INTEGER,
@@ -2259,7 +2391,8 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .validate_ldb           = dsdb_syntax_INT32_validate_ldb,
                .equality               = "integerMatch",
                .comment                = "Integer",
-               .ldb_syntax             = LDB_SYNTAX_SAMBA_INT32
+               .ldb_syntax             = LDB_SYNTAX_SAMBA_INT32,
+               .auto_normalise         = true
        },{
                .name                   = "String(Octet)",
                .ldap_oid               = LDB_SYNTAX_OCTET_STRING,
@@ -2270,6 +2403,8 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .validate_ldb           = dsdb_syntax_DATA_BLOB_validate_ldb,
                .equality               = "octetStringMatch",
                .comment                = "Octet String",
+               .userParameters         = true,
+               .ldb_syntax             = LDB_SYNTAX_SAMBA_OCTET_STRING
        },{
                .name                   = "String(Sid)",
                .ldap_oid               = LDB_SYNTAX_OCTET_STRING,
@@ -2300,7 +2435,8 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .drsuapi_to_ldb         = dsdb_syntax_INT32_drsuapi_to_ldb,
                .ldb_to_drsuapi         = dsdb_syntax_INT32_ldb_to_drsuapi,
                .validate_ldb           = dsdb_syntax_INT32_validate_ldb,
-               .ldb_syntax             = LDB_SYNTAX_SAMBA_INT32
+               .ldb_syntax             = LDB_SYNTAX_SAMBA_INT32,
+               .auto_normalise         = true
        },{
        /* not used in w2k3 forest */
                .name                   = "String(Numeric)",
@@ -2322,7 +2458,7 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .drsuapi_to_ldb         = dsdb_syntax_DATA_BLOB_drsuapi_to_ldb,
                .ldb_to_drsuapi         = dsdb_syntax_DATA_BLOB_ldb_to_drsuapi,
                .validate_ldb           = dsdb_syntax_DATA_BLOB_validate_ldb,
-               .ldb_syntax             = LDB_SYNTAX_OCTET_STRING,
+               .ldb_syntax             = LDB_SYNTAX_SAMBA_OCTET_STRING,
        },{
                .name                   = "String(Teletex)",
                .ldap_oid               = "1.2.840.113556.1.4.905",
@@ -2345,7 +2481,7 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .validate_ldb           = dsdb_syntax_DATA_BLOB_validate_ldb,
                .equality               = "caseExactIA5Match",
                .comment                = "Printable String",
-               .ldb_syntax             = LDB_SYNTAX_OCTET_STRING,
+               .ldb_syntax             = LDB_SYNTAX_SAMBA_OCTET_STRING,
        },{
                .name                   = "String(UTC-Time)",
                .ldap_oid               = "1.3.6.1.4.1.1466.115.121.1.53",
@@ -2356,6 +2492,7 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .validate_ldb           = dsdb_syntax_NTTIME_UTC_validate_ldb,
                .equality               = "generalizedTimeMatch",
                .comment                = "UTC Time",
+               .auto_normalise         = true
        },{
                .name                   = "String(Generalized-Time)",
                .ldap_oid               = "1.3.6.1.4.1.1466.115.121.1.24",
@@ -2366,16 +2503,23 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .validate_ldb           = dsdb_syntax_NTTIME_validate_ldb,
                .equality               = "generalizedTimeMatch",
                .comment                = "Generalized Time",
-               .ldb_syntax             = LDB_SYNTAX_UTC_TIME,
+               .auto_normalise         = true
        },{
        /* not used in w2k3 schema */
                .name                   = "String(Case Sensitive)",
                .ldap_oid               = "1.2.840.113556.1.4.1362",
                .oMSyntax               = 27,
                .attributeSyntax_oid    = "2.5.5.3",
-               .drsuapi_to_ldb         = dsdb_syntax_FOOBAR_drsuapi_to_ldb,
-               .ldb_to_drsuapi         = dsdb_syntax_FOOBAR_ldb_to_drsuapi,
-               .validate_ldb           = dsdb_syntax_FOOBAR_validate_ldb,
+               .drsuapi_to_ldb         = dsdb_syntax_DATA_BLOB_drsuapi_to_ldb,
+               .ldb_to_drsuapi         = dsdb_syntax_DATA_BLOB_ldb_to_drsuapi,
+               .validate_ldb           = dsdb_syntax_DATA_BLOB_validate_ldb,
+               .equality               = "caseExactMatch",
+               .substring              = "caseExactSubstringsMatch",
+               /* TODO (kim): according to LDAP rfc we should be using same comparison
+                * as Directory String (LDB_SYNTAX_DIRECTORY_STRING), but case sensitive.
+                * But according to ms docs binary compare should do the job:
+                * http://msdn.microsoft.com/en-us/library/cc223200(v=PROT.10).aspx */
+               .ldb_syntax             = LDB_SYNTAX_SAMBA_OCTET_STRING,
        },{
                .name                   = "String(Unicode)",
                .ldap_oid               = LDB_SYNTAX_DIRECTORY_STRING,
@@ -2398,6 +2542,7 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .equality               = "integerMatch",
                .comment                = "Large Integer",
                .ldb_syntax             = LDB_SYNTAX_INTEGER,
+               .auto_normalise         = true
        },{
                .name                   = "String(NT-Sec-Desc)",
                .ldap_oid               = LDB_SYNTAX_SAMBA_SECURITY_DESCRIPTOR,
@@ -2441,11 +2586,11 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
                .equality               = "caseIgnoreMatch",
                .ldb_syntax             = LDB_SYNTAX_DN,
        },{
-       /* 
+       /*
         * TODO: verify if DATA_BLOB is correct here...!
         *
         *       repsFrom and repsTo are the only attributes using
-        *       this attribute syntax, but they're not replicated... 
+        *       this attribute syntax, but they're not replicated...
         */
                .name                   = "Object(Replica-Link)",
                .ldap_oid               = "1.3.6.1.4.1.1466.115.121.1.40",
@@ -2469,7 +2614,7 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
        },{
        /* not used in w2k3 schema */
                .name                   = "Object(Access-Point)",
-               .ldap_oid               = "1.3.6.1.4.1.1466.115.121.1.2",
+               .ldap_oid               = DSDB_SYNTAX_ACCESS_POINT,
                .oMSyntax               = 127,
                .oMObjectClass          = OMOBJECTCLASS("\x2b\x0c\x02\x87\x73\x1c\x00\x85\x3e"),
                .attributeSyntax_oid    = "2.5.5.14",
@@ -2492,7 +2637,7 @@ static const struct dsdb_syntax dsdb_syntaxes[] = {
        }
 };
 
-const struct dsdb_syntax *find_syntax_map_by_ad_oid(const char *ad_oid) 
+const struct dsdb_syntax *find_syntax_map_by_ad_oid(const char *ad_oid)
 {
        unsigned int i;
        for (i=0; dsdb_syntaxes[i].ldap_oid; i++) {
@@ -2503,7 +2648,7 @@ const struct dsdb_syntax *find_syntax_map_by_ad_oid(const char *ad_oid)
        return NULL;
 }
 
-const struct dsdb_syntax *find_syntax_map_by_ad_syntax(int oMSyntax) 
+const struct dsdb_syntax *find_syntax_map_by_ad_syntax(int oMSyntax)
 {
        unsigned int i;
        for (i=0; dsdb_syntaxes[i].ldap_oid; i++) {
@@ -2514,7 +2659,7 @@ const struct dsdb_syntax *find_syntax_map_by_ad_syntax(int oMSyntax)
        return NULL;
 }
 
-const struct dsdb_syntax *find_syntax_map_by_standard_oid(const char *standard_oid) 
+const struct dsdb_syntax *find_syntax_map_by_standard_oid(const char *standard_oid)
 {
        unsigned int i;
        for (i=0; dsdb_syntaxes[i].ldap_oid; i++) {
@@ -2524,11 +2669,22 @@ const struct dsdb_syntax *find_syntax_map_by_standard_oid(const char *standard_o
        }
        return NULL;
 }
+
 const struct dsdb_syntax *dsdb_syntax_for_attribute(const struct dsdb_attribute *attr)
 {
        unsigned int i;
 
        for (i=0; i < ARRAY_SIZE(dsdb_syntaxes); i++) {
+               /*
+                * We must pretend that userParameters was declared
+                * binary string, so we can store the 'UTF16' (not
+                * really string) structure as given over SAMR to samba
+                */
+               if (dsdb_syntaxes[i].userParameters &&
+                   (strcasecmp(attr->lDAPDisplayName, "userParameters") == 0))
+               {
+                       return &dsdb_syntaxes[i];
+               }
                if (attr->oMSyntax != dsdb_syntaxes[i].oMSyntax) continue;
 
                if (attr->oMObjectClass.length != dsdb_syntaxes[i].oMObjectClass.length) continue;
@@ -2549,35 +2705,116 @@ const struct dsdb_syntax *dsdb_syntax_for_attribute(const struct dsdb_attribute
        return NULL;
 }
 
-WERROR dsdb_attribute_drsuapi_to_ldb(struct ldb_context *ldb, 
+WERROR dsdb_attribute_drsuapi_remote_to_local(const struct dsdb_syntax_ctx *ctx,
+                                             enum drsuapi_DsAttributeId remote_attid_as_enum,
+                                             enum drsuapi_DsAttributeId *local_attid_as_enum,
+                                             const struct dsdb_attribute **_sa)
+{
+       TALLOC_CTX *frame = talloc_stackframe();
+       const struct dsdb_attribute *sa;
+       uint32_t attid_local;
+       bool ok;
+
+       if (ctx->pfm_remote == NULL) {
+               smb_panic(__location__);
+       }
+
+       switch (dsdb_pfm_get_attid_type(remote_attid_as_enum)) {
+       case DSDB_ATTID_TYPE_PFM:
+               /* map remote ATTID to local ATTID */
+               ok = dsdb_syntax_attid_from_remote_attid(ctx, frame,
+                                                        remote_attid_as_enum,
+                                                        &attid_local);
+               if (!ok) {
+                       DEBUG(0,(__location__ ": Can't find local ATTID for 0x%08X\n",
+                                remote_attid_as_enum));
+                       TALLOC_FREE(frame);
+                       return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
+               }
+               break;
+       case DSDB_ATTID_TYPE_INTID:
+               /* use IntId value directly */
+               attid_local = remote_attid_as_enum;
+               break;
+       default:
+               /* we should never get here */
+               DEBUG(0,(__location__ ": Invalid ATTID type passed for conversion - 0x%08X\n",
+                        remote_attid_as_enum));
+               TALLOC_FREE(frame);
+               return WERR_INVALID_PARAMETER;
+       }
+
+       sa = dsdb_attribute_by_attributeID_id(ctx->schema, attid_local);
+       if (!sa) {
+               int dbg_level = ctx->schema->resolving_in_progress ? 10 : 0;
+               DEBUG(dbg_level,(__location__ ": Unknown local attributeID_id 0x%08X remote 0x%08X%s\n",
+                     attid_local, remote_attid_as_enum,
+                     ctx->schema->resolving_in_progress ? "resolving in progress" : ""));
+               TALLOC_FREE(frame);
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
+       }
+
+       /*
+        * We return the same class of attid as we were given.  That
+        * is, we trust the remote server not to use an
+        * msDS-IntId value in the schema partition
+        */
+       if (local_attid_as_enum != NULL) {
+               *local_attid_as_enum = (enum drsuapi_DsAttributeId)attid_local;
+       }
+
+       if (_sa != NULL) {
+               *_sa = sa;
+       }
+
+       TALLOC_FREE(frame);
+       return WERR_OK;
+}
+
+WERROR dsdb_attribute_drsuapi_to_ldb(struct ldb_context *ldb,
                                     const struct dsdb_schema *schema,
+                                    const struct dsdb_schema_prefixmap *pfm_remote,
                                     const struct drsuapi_DsReplicaAttribute *in,
                                     TALLOC_CTX *mem_ctx,
-                                    struct ldb_message_element *out)
+                                    struct ldb_message_element *out,
+                                    enum drsuapi_DsAttributeId *local_attid_as_enum)
 {
-       const struct dsdb_attribute *sa;
+       struct dsdb_syntax_ctx syntax_ctx;
+       const struct dsdb_attribute *sa = NULL;
+       WERROR werr;
 
-       sa = dsdb_attribute_by_attributeID_id(schema, in->attid);
-       if (!sa) {
-               return WERR_FOOBAR;
+       /* use default syntax conversion context */
+       dsdb_syntax_ctx_init(&syntax_ctx, ldb, schema);
+       syntax_ctx.pfm_remote = pfm_remote;
+
+       werr = dsdb_attribute_drsuapi_remote_to_local(&syntax_ctx,
+                                                     in->attid,
+                                                     local_attid_as_enum,
+                                                     &sa);
+       if (!W_ERROR_IS_OK(werr)) {
+               return werr;
        }
 
-       return sa->syntax->drsuapi_to_ldb(ldb, schema, sa, in, mem_ctx, out);
+       return sa->syntax->drsuapi_to_ldb(&syntax_ctx, sa, in, mem_ctx, out);
 }
 
-WERROR dsdb_attribute_ldb_to_drsuapi(struct ldb_context *ldb, 
+WERROR dsdb_attribute_ldb_to_drsuapi(struct ldb_context *ldb,
                                     const struct dsdb_schema *schema,
                                     const struct ldb_message_element *in,
                                     TALLOC_CTX *mem_ctx,
                                     struct drsuapi_DsReplicaAttribute *out)
 {
        const struct dsdb_attribute *sa;
+       struct dsdb_syntax_ctx syntax_ctx;
 
        sa = dsdb_attribute_by_lDAPDisplayName(schema, in->name);
        if (!sa) {
-               return WERR_FOOBAR;
+               return WERR_DS_ATT_NOT_DEF_IN_SCHEMA;
        }
 
-       return sa->syntax->ldb_to_drsuapi(ldb, schema, sa, in, mem_ctx, out);
+       /* use default syntax conversion context */
+       dsdb_syntax_ctx_init(&syntax_ctx, ldb, schema);
+
+       return sa->syntax->ldb_to_drsuapi(&syntax_ctx, sa, in, mem_ctx, out);
 }