s4:samldb LDB module - assign better memory contexts on two places
[mat/samba.git] / source4 / dsdb / samdb / ldb_modules / samldb.c
index 5b7e4bea07bbec1a03dfca56e4d7f8098e513d61..0e4d852d1562b243dfa68dceb0b7eaf64d997d5d 100644 (file)
@@ -59,15 +59,8 @@ struct samldb_ctx {
        /* the resulting message */
        struct ldb_message *msg;
 
-       /* holds the entry SID */
-       struct dom_sid *sid;
-
-       /* holds a generic dn */
-       struct ldb_dn *dn;
-
-       /* used in conjunction with "sid" in "samldb_dn_from_sid" and
-        * "samldb_find_for_defaultObjectCategory" */
-       struct ldb_dn *res_dn;
+       /* used in "samldb_find_for_defaultObjectCategory" */
+       struct ldb_dn *dn, *res_dn;
 
        /* all the async steps necessary to complete the operation */
        struct samldb_step *steps;
@@ -103,7 +96,7 @@ static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
 
        step = talloc_zero(ac, struct samldb_step);
        if (step == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_oom(ldb_module_get_ctx(ac->module));
        }
 
        step->fn = fn;
@@ -113,7 +106,7 @@ static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
                ac->curstep = step;
        } else {
                if (ac->curstep == NULL)
-                       return LDB_ERR_OPERATIONS_ERROR;
+                       return ldb_operr(ldb_module_get_ctx(ac->module));
                for (stepper = ac->curstep; stepper->next != NULL;
                        stepper = stepper->next);
                stepper->next = step;
@@ -125,7 +118,7 @@ static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
 static int samldb_first_step(struct samldb_ctx *ac)
 {
        if (ac->steps == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb_module_get_ctx(ac->module));
        }
 
        ac->curstep = ac->steps;
@@ -149,7 +142,10 @@ static int samldb_next_step(struct samldb_ctx *ac)
        }
 }
 
-static int samldb_generate_samAccountName(struct ldb_message *msg)
+
+/* sAMAccountName handling */
+
+static int samldb_generate_sAMAccountName(struct ldb_context *ldb, struct ldb_message *msg)
 {
        char *name;
 
@@ -160,98 +156,44 @@ static int samldb_generate_samAccountName(struct ldb_message *msg)
                                (unsigned int)generate_random(),
                                (unsigned int)generate_random());
        if (name == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_oom(ldb);
        }
-       return ldb_msg_add_steal_string(msg, "samAccountName", name);
+       return ldb_msg_add_steal_string(msg, "sAMAccountName", name);
 }
 
-/*
- * samldb_check_samAccountName (async)
- */
-
-static int samldb_check_samAccountName_callback(struct ldb_request *req,
-                                               struct ldb_reply *ares)
+static int samldb_check_sAMAccountName(struct samldb_ctx *ac)
 {
-       struct samldb_ctx *ac;
-       int ret;
-
-       ac = talloc_get_type(req->context, struct samldb_ctx);
-
-       if (ares->error != LDB_SUCCESS) {
-               return ldb_module_done(ac->req, ares->controls,
-                                       ares->response, ares->error);
-       }
-
-       switch (ares->type) {
-       case LDB_REPLY_ENTRY:
-               /* if we get an entry it means this samAccountName
-                * already exists */
-               return ldb_module_done(ac->req, NULL, NULL,
-                                       LDB_ERR_ENTRY_ALREADY_EXISTS);
-
-       case LDB_REPLY_REFERRAL:
-               /* ignore */
-               talloc_free(ares);
-               ret = LDB_SUCCESS;
-               break;
-
-       case LDB_REPLY_DONE:
-               /* not found, go on */
-               talloc_free(ares);
-               ret = samldb_next_step(ac);
-               break;
-       }
-
-       if (ret != LDB_SUCCESS) {
-               return ldb_module_done(ac->req, NULL, NULL, ret);
-       }
-
-       return LDB_SUCCESS;
-}
-
-static int samldb_check_samAccountName(struct samldb_ctx *ac)
-{
-       struct ldb_context *ldb;
-       struct ldb_request *req;
+       struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
        const char *name;
-       char *filter;
         int ret;
 
-       ldb = ldb_module_get_ctx(ac->module);
-
-        if (ldb_msg_find_element(ac->msg, "samAccountName") == NULL) {
-                ret = samldb_generate_samAccountName(ac->msg);
+        if (ldb_msg_find_element(ac->msg, "sAMAccountName") == NULL) {
+                ret = samldb_generate_sAMAccountName(ldb, ac->msg);
                 if (ret != LDB_SUCCESS) {
                         return ret;
                 }
         }
 
-       name = ldb_msg_find_attr_as_string(ac->msg, "samAccountName", NULL);
+       name = ldb_msg_find_attr_as_string(ac->msg, "sAMAccountName", NULL);
        if (name == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
-       filter = talloc_asprintf(ac, "samAccountName=%s",
+
+       ret = samdb_search_count(ldb, NULL, "(sAMAccountName=%s)",
                                 ldb_binary_encode_string(ac, name));
-       if (filter == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+       if ((ret < 0) || (ret > 1)) {
+               return ldb_operr(ldb);
        }
-
-       ret = ldb_build_search_req(&req, ldb, ac,
-                                  ldb_get_default_basedn(ldb),
-                                  LDB_SCOPE_SUBTREE,
-                                  filter, NULL,
-                                  NULL,
-                                  ac, samldb_check_samAccountName_callback,
-                                  ac->req);
-       talloc_free(filter);
-       if (ret != LDB_SUCCESS) {
-               return ret;
+       if (ret == 1) {
+               return LDB_ERR_ENTRY_ALREADY_EXISTS;
        }
-       return ldb_next_request(ac->module, req);
+
+       return samldb_next_step(ac);
 }
 
+/* sAMAccountType handling */
 
-static int samldb_check_samAccountType(struct samldb_ctx *ac)
+static int samldb_check_sAMAccountType(struct samldb_ctx *ac)
 {
        struct ldb_context *ldb;
        unsigned int account_type;
@@ -284,9 +226,7 @@ static int samldb_check_samAccountType(struct samldb_ctx *ac)
                                return ret;
                        }
                }
-       } else
-       if (strcmp("group", ac->type) == 0) {
-
+       } else if (strcmp("group", ac->type) == 0) {
                group_type = samdb_result_uint(ac->msg, "groupType", 0);
                if (group_type == 0) {
                        ldb_asprintf_errstring(ldb,
@@ -307,6 +247,52 @@ static int samldb_check_samAccountType(struct samldb_ctx *ac)
        return samldb_next_step(ac);
 }
 
+/* primaryGroupID handling */
+
+static int samldb_check_primaryGroupID(struct samldb_ctx *ac)
+{
+       struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
+       struct ldb_dn *prim_group_dn;
+       uint32_t rid;
+       struct dom_sid *sid;
+       int ret;
+
+       rid = samdb_result_uint(ac->msg, "primaryGroupID", (uint32_t) -1);
+       if (rid == (uint32_t) -1) {
+               uint32_t uac = samdb_result_uint(ac->msg, "userAccountControl",
+                                                0);
+
+               rid = ds_uf2prim_group_rid(uac);
+
+               ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
+                                        "primaryGroupID", rid);
+               if (ret != LDB_SUCCESS) {
+                       return ret;
+               }
+       } else if (!ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID)) {
+               ldb_set_errstring(ldb,
+                                 "The primary group isn't settable on add operations!");
+               return LDB_ERR_UNWILLING_TO_PERFORM;
+       }
+
+       sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
+       if (sid == NULL) {
+               return ldb_operr(ldb);
+       }
+
+       prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
+                                       ldap_encode_ndr_dom_sid(ac, sid));
+       if (prim_group_dn == NULL) {
+               ldb_asprintf_errstring(ldb,
+                                      "Failed to find primary group with RID %u!",
+                                      rid);
+               return LDB_ERR_UNWILLING_TO_PERFORM;
+       }
+
+       return samldb_next_step(ac);
+}
+
+
 static bool samldb_msg_add_sid(struct ldb_message *msg,
                                const char *name,
                                const struct dom_sid *sid)
@@ -327,254 +313,140 @@ static bool samldb_msg_add_sid(struct ldb_message *msg,
 static int samldb_allocate_sid(struct samldb_ctx *ac)
 {
        uint32_t rid;
-       int ret;
+       struct dom_sid *sid;
        struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
+       int ret;
 
        ret = ridalloc_allocate_rid(ac->module, &rid);
        if (ret != LDB_SUCCESS) {
                return ret;
        }
 
-       ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
-       if (ac->sid == NULL) {
-               ldb_module_oom(ac->module);
-               return LDB_ERR_OPERATIONS_ERROR;
+       sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
+       if (sid == NULL) {
+               return ldb_module_oom(ac->module);
        }
 
-       if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
-               return LDB_ERR_OPERATIONS_ERROR;
+       if ( ! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
+               return ldb_operr(ldb);
        }
 
        return samldb_next_step(ac);
 }
 
 /*
- * samldb_dn_from_sid (async)
+  see if a krbtgt_number is available
  */
-
-static int samldb_dn_from_sid(struct samldb_ctx *ac);
-
-static int samldb_dn_from_sid_callback(struct ldb_request *req,
-       struct ldb_reply *ares)
+static bool samldb_krbtgtnumber_available(struct samldb_ctx *ac, unsigned krbtgt_number)
 {
-       struct ldb_context *ldb;
-       struct samldb_ctx *ac;
+       TALLOC_CTX *tmp_ctx = talloc_new(ac);
+       struct ldb_result *res;
+       const char *attrs[] = { NULL };
        int ret;
 
-       ac = talloc_get_type(req->context, struct samldb_ctx);
-       ldb = ldb_module_get_ctx(ac->module);
-
-       if (!ares) {
-               ret = LDB_ERR_OPERATIONS_ERROR;
-               goto done;
-       }
-       if (ares->error != LDB_SUCCESS) {
-               return ldb_module_done(ac->req, ares->controls,
-                                       ares->response, ares->error);
-       }
-
-       switch (ares->type) {
-       case LDB_REPLY_ENTRY:
-               /* save entry */
-               if (ac->res_dn != NULL) {
-                       /* one too many! */
-                       ldb_set_errstring(ldb,
-                               "Invalid number of results while searching "
-                               "for domain objects!");
-                       ret = LDB_ERR_OPERATIONS_ERROR;
-                       break;
-               }
-               ac->res_dn = ldb_dn_copy(ac, ares->message->dn);
-
-               talloc_free(ares);
-               ret = LDB_SUCCESS;
-               break;
-
-       case LDB_REPLY_REFERRAL:
-               /* ignore */
-               talloc_free(ares);
-               ret = LDB_SUCCESS;
-               break;
-
-       case LDB_REPLY_DONE:
-               talloc_free(ares);
-
-               /* found or not found, go on */
-               ret = samldb_next_step(ac);
-               break;
-       }
-
-done:
-       if (ret != LDB_SUCCESS) {
-               return ldb_module_done(ac->req, NULL, NULL, ret);
+       ret = dsdb_module_search(ac->module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE,
+                                attrs, DSDB_FLAG_NEXT_MODULE,
+                                "msDC-SecondaryKrbTgtNumber=%u", krbtgt_number);
+       if (ret == LDB_SUCCESS && res->count == 0) {
+               talloc_free(tmp_ctx);
+               return true;
        }
-
-       return LDB_SUCCESS;
+       talloc_free(tmp_ctx);
+       return false;
 }
 
-/* Finds the DN "res_dn" of an object with a given SID "sid" */
-static int samldb_dn_from_sid(struct samldb_ctx *ac)
+/* special handling for add in RODC join */
+static int samldb_rodc_add(struct samldb_ctx *ac)
 {
-       struct ldb_context *ldb;
-       static const char * const attrs[] = { NULL };
-       struct ldb_request *req;
-       char *filter;
+       struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
+       unsigned krbtgt_number, i_start, i;
        int ret;
+       char *newpass;
 
-       ldb = ldb_module_get_ctx(ac->module);
-
-       if (ac->sid == NULL)
-               return LDB_ERR_OPERATIONS_ERROR;
-
-       filter = talloc_asprintf(ac, "(objectSid=%s)",
-               ldap_encode_ndr_dom_sid(ac, ac->sid));
-       if (filter == NULL)
-               return LDB_ERR_OPERATIONS_ERROR;
-
-       ret = ldb_build_search_req(&req, ldb, ac,
-                               ldb_get_default_basedn(ldb),
-                               LDB_SCOPE_SUBTREE,
-                               filter, attrs,
-                               NULL,
-                               ac, samldb_dn_from_sid_callback,
-                               ac->req);
-       if (ret != LDB_SUCCESS)
-               return ret;
-
-       return ldb_next_request(ac->module, req);
-}
-
-
-static int samldb_check_primaryGroupID_1(struct samldb_ctx *ac)
-{
-       struct ldb_context *ldb;
-       uint32_t rid;
-
-       ldb = ldb_module_get_ctx(ac->module);
-
-       rid = samdb_result_uint(ac->msg, "primaryGroupID", ~0);
-       ac->sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
-       if (ac->sid == NULL)
-               return LDB_ERR_OPERATIONS_ERROR;
-       ac->res_dn = NULL;
-
-       return samldb_next_step(ac);
-}
-
-static int samldb_check_primaryGroupID_2(struct samldb_ctx *ac)
-{
-       if (ac->res_dn == NULL) {
-               struct ldb_context *ldb;
-               ldb = ldb_module_get_ctx(ac->module);
-               ldb_asprintf_errstring(ldb,
-                                      "Failed to find group sid %s!",
-                                      dom_sid_string(ac->sid, ac->sid));
-               return LDB_ERR_UNWILLING_TO_PERFORM;
+       /* find a unused msDC-SecondaryKrbTgtNumber */
+       i_start = generate_random() & 0xFFFF;
+       if (i_start == 0) {
+               i_start = 1;
        }
 
-       return samldb_next_step(ac);
-}
-
-
-/*
- * samldb_find_for_defaultObjectCategory (async)
- */
-
-static int samldb_find_for_defaultObjectCategory_callback(struct ldb_request *req,
-                                                         struct ldb_reply *ares)
-{
-       struct ldb_context *ldb;
-       struct samldb_ctx *ac;
-       int ret;
-
-       ac = talloc_get_type(req->context, struct samldb_ctx);
-       ldb = ldb_module_get_ctx(ac->module);
-
-       if (!ares) {
-               ret = LDB_ERR_OPERATIONS_ERROR;
-               goto done;
+       for (i=i_start; i<=0xFFFF; i++) {
+               if (samldb_krbtgtnumber_available(ac, i)) {
+                       krbtgt_number = i;
+                       goto found;
+               }
        }
-       if (ares->error != LDB_SUCCESS) {
-               if (ares->error == LDB_ERR_NO_SUCH_OBJECT) {
-                       if (ldb_request_get_control(ac->req,
-                                                   LDB_CONTROL_RELAX_OID) != NULL) {
-                               /* Don't be pricky when the DN doesn't exist */
-                               /* if we have the RELAX control specified */
-                               ac->res_dn = req->op.search.base;
-                               return samldb_next_step(ac);
-                       } else {
-                               ldb_set_errstring(ldb,
-                                       "samldb_find_defaultObjectCategory: "
-                                       "Invalid DN for 'defaultObjectCategory'!");
-                               ares->error = LDB_ERR_CONSTRAINT_VIOLATION;
-                       }
+       for (i=1; i<i_start; i++) {
+               if (samldb_krbtgtnumber_available(ac, i)) {
+                       krbtgt_number = i;
+                       goto found;
                }
-
-               return ldb_module_done(ac->req, ares->controls,
-                                       ares->response, ares->error);
        }
 
-       switch (ares->type) {
-       case LDB_REPLY_ENTRY:
-               ac->res_dn = talloc_steal(ac, ares->message->dn);
+       ldb_asprintf_errstring(ldb_module_get_ctx(ac->module),
+                              "%08X: Unable to find available msDS-SecondaryKrbTgtNumber",
+                              W_ERROR_V(WERR_NO_SYSTEM_RESOURCES));
+       return LDB_ERR_OTHER;
 
-               ret = LDB_SUCCESS;
-               break;
+found:
+       ret = ldb_msg_add_empty(ac->msg, "msDS-SecondaryKrbTgtNumber", LDB_FLAG_INTERNAL_DISABLE_VALIDATION, NULL);
+       if (ret != LDB_SUCCESS) {
+               return ldb_operr(ldb);
+       }
 
-       case LDB_REPLY_REFERRAL:
-               /* ignore */
-               talloc_free(ares);
-               ret = LDB_SUCCESS;
-               break;
+       ret = ldb_msg_add_fmt(ac->msg, "msDS-SecondaryKrbTgtNumber", "%u", krbtgt_number);
+       if (ret != LDB_SUCCESS) {
+               return ldb_operr(ldb);
+       }
 
-       case LDB_REPLY_DONE:
-               talloc_free(ares);
+       ret = ldb_msg_add_fmt(ac->msg, "sAMAccountName", "krbtgt_%u", krbtgt_number);
+       if (ret != LDB_SUCCESS) {
+               return ldb_operr(ldb);
+       }
 
-               if (ac->res_dn != NULL) {
-                       /* when found go on */
-                       ret = samldb_next_step(ac);
-               } else {
-                       ret = LDB_ERR_OPERATIONS_ERROR;
-               }
-               break;
+       newpass = generate_random_password(ac, 128, 255);
+       if (newpass == NULL) {
+               return ldb_operr(ldb);
        }
 
-done:
+       ret = ldb_msg_add_steal_string(ac->msg, "clearTextPassword", newpass);
        if (ret != LDB_SUCCESS) {
-               return ldb_module_done(ac->req, NULL, NULL, ret);
+               return ldb_operr(ldb);
        }
 
-       return LDB_SUCCESS;
+       return samldb_next_step(ac);
 }
 
 static int samldb_find_for_defaultObjectCategory(struct samldb_ctx *ac)
 {
-       struct ldb_context *ldb;
-       struct ldb_request *req;
-       static const char *no_attrs[] = { NULL };
+       struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
+       struct ldb_result *res;
+       const char *no_attrs[] = { NULL };
         int ret;
 
-       ldb = ldb_module_get_ctx(ac->module);
-
        ac->res_dn = NULL;
 
-       ret = ldb_build_search_req(&req, ldb, ac,
-                                  ac->dn, LDB_SCOPE_BASE,
-                                  "(objectClass=classSchema)", no_attrs,
-                                  NULL, ac,
-                                  samldb_find_for_defaultObjectCategory_callback,
-                                  ac->req);
-       if (ret != LDB_SUCCESS) {
-               return ret;
+       ret = dsdb_module_search(ac->module, ac, &res,
+                                ac->dn, LDB_SCOPE_BASE, no_attrs,
+                                DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT | DSDB_FLAG_NEXT_MODULE,
+                                "(objectClass=classSchema)");
+       if (ret == LDB_ERR_NO_SUCH_OBJECT) {
+               /* Don't be pricky when the DN doesn't exist if we have the */
+               /* RELAX control specified */
+               if (ldb_request_get_control(ac->req,
+                                           LDB_CONTROL_RELAX_OID) == NULL) {
+                       ldb_set_errstring(ldb,
+                                         "samldb_find_defaultObjectCategory: "
+                                         "Invalid DN for 'defaultObjectCategory'!");
+                       return LDB_ERR_CONSTRAINT_VIOLATION;
+               }
        }
-
-       ret = dsdb_request_add_controls(req,
-                                       DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT);
-       if (ret != LDB_SUCCESS) {
+       if ((ret != LDB_ERR_NO_SUCH_OBJECT) && (ret != LDB_SUCCESS)) {
                return ret;
        }
 
-       return ldb_next_request(ac->module, req);
+       ac->res_dn = ac->dn;
+
+       return samldb_next_step(ac);
 }
 
 /**
@@ -635,14 +507,15 @@ static int samldb_add_handle_msDS_IntId(struct samldb_ctx *ac)
 
                ret = dsdb_module_search(ac->module, ac,
                                         &ldb_res,
-                                        schema_dn, LDB_SCOPE_ONELEVEL, NULL, 0,
+                                        schema_dn, LDB_SCOPE_ONELEVEL, NULL,
+                                        DSDB_FLAG_NEXT_MODULE,
                                         "(msDS-IntId=%d)", msds_intid);
                if (ret != LDB_SUCCESS) {
                        ldb_debug_set(ldb, LDB_DEBUG_ERROR,
                                      __location__": Searching for msDS-IntId=%d failed - %s\n",
                                      msds_intid,
                                      ldb_errstring(ldb));
-                       return LDB_ERR_OPERATIONS_ERROR;
+                       return ldb_operr(ldb);
                }
                id_exists = (ldb_res->count > 0);
 
@@ -710,6 +583,7 @@ static int samldb_add_entry(struct samldb_ctx *ac)
                                ac->req->controls,
                                ac, samldb_add_entry_callback,
                                ac->req);
+       LDB_REQ_SET_LOCATION(req);
        if (ret != LDB_SUCCESS) {
                return ret;
        }
@@ -744,6 +618,8 @@ static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
        struct loadparm_context *lp_ctx;
        enum sid_generator sid_generator;
        int ret;
+       struct ldb_control *rodc_control;
+       struct dom_sid *sid;
 
        ldb = ldb_module_get_ctx(ac->module);
 
@@ -774,11 +650,6 @@ static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
                ret = samdb_find_or_add_attribute(ldb, ac->msg,
                        "pwdLastSet", "0");
                if (ret != LDB_SUCCESS) return ret;
-               if (!ldb_msg_find_element(ac->msg, "primaryGroupID")) {
-                       ret = samdb_msg_add_uint(ldb, ac->msg, ac->msg,
-                                                "primaryGroupID", DOMAIN_RID_USERS);
-                       if (ret != LDB_SUCCESS) return ret;
-               }
                ret = samdb_find_or_add_attribute(ldb, ac->msg,
                        "accountExpires", "9223372036854775807");
                if (ret != LDB_SUCCESS) return ret;
@@ -850,7 +721,7 @@ static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
                         * caller. Use the entry DN for it. */
                        ac->dn = ac->msg->dn;
 
-                       ret = samdb_msg_add_string(ldb, ac, ac->msg,
+                       ret = samdb_msg_add_string(ldb, ac->msg, ac->msg,
                                                   "defaultObjectCategory",
                                                   ldb_dn_get_linearized(ac->dn));
                        if (ret != LDB_SUCCESS) {
@@ -874,7 +745,7 @@ static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
                if (!ldb_msg_find_element(ac->msg, "lDAPDisplayName")) {
                        /* the RDN has prefix "CN" */
                        ret = ldb_msg_add_string(ac->msg, "lDAPDisplayName",
-                               samdb_cn_to_lDAPDisplayName(ac,
+                               samdb_cn_to_lDAPDisplayName(ac->msg,
                                        (const char *) rdn_value->data));
                        if (ret != LDB_SUCCESS) {
                                ldb_oom(ldb);
@@ -919,38 +790,42 @@ static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
                return LDB_ERR_OPERATIONS_ERROR;
        }
 
-       /* check if we have a valid samAccountName */
-       ret = samldb_add_step(ac, samldb_check_samAccountName);
+       rodc_control = ldb_request_get_control(ac->req, LDB_CONTROL_RODC_DCPROMO_OID);
+       if (rodc_control) {
+               /* see [MS-ADTS] 3.1.1.3.4.1.23 LDAP_SERVER_RODC_DCPROMO_OID */
+               rodc_control->critical = false;
+               ret = samldb_add_step(ac, samldb_rodc_add);
+               if (ret != LDB_SUCCESS) return ret;
+       }
+
+       /* check if we have a valid sAMAccountName */
+       ret = samldb_add_step(ac, samldb_check_sAMAccountName);
        if (ret != LDB_SUCCESS) return ret;
 
        /* check account_type/group_type */
-       ret = samldb_add_step(ac, samldb_check_samAccountType);
+       ret = samldb_add_step(ac, samldb_check_sAMAccountType);
        if (ret != LDB_SUCCESS) return ret;
 
        /* check if we have a valid primary group ID */
        if (strcmp(ac->type, "user") == 0) {
-               ret = samldb_add_step(ac, samldb_check_primaryGroupID_1);
-               if (ret != LDB_SUCCESS) return ret;
-               ret = samldb_add_step(ac, samldb_dn_from_sid);
-               if (ret != LDB_SUCCESS) return ret;
-               ret = samldb_add_step(ac, samldb_check_primaryGroupID_2);
+               ret = samldb_add_step(ac, samldb_check_primaryGroupID);
                if (ret != LDB_SUCCESS) return ret;
        }
 
        lp_ctx = talloc_get_type(ldb_get_opaque(ldb, "loadparm"),
                 struct loadparm_context);
 
-       /* don't allow objectSID to be specified without the RELAX control */
-       ac->sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
-       if (ac->sid && !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
+       /* don't allow objectSid to be specified without the RELAX control */
+       sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
+       if (sid && !ldb_request_get_control(ac->req, LDB_CONTROL_RELAX_OID) &&
            !dsdb_module_am_system(ac->module)) {
                ldb_asprintf_errstring(ldb, "No SID may be specified in user/group creation for %s",
                                       ldb_dn_get_linearized(ac->msg->dn));
                return LDB_ERR_UNWILLING_TO_PERFORM;
        }
 
-       if ( ! ac->sid) {
-               sid_generator = lp_sid_generator(lp_ctx);
+       if (sid == NULL) {
+               sid_generator = lpcfg_sid_generator(lp_ctx);
                if (sid_generator == SID_GENERATOR_INTERNAL) {
                        ret = samldb_add_step(ac, samldb_allocate_sid);
                        if (ret != LDB_SUCCESS) return ret;
@@ -967,24 +842,23 @@ static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
 static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
 {
        struct ldb_context *ldb;
+       struct dom_sid *sid;
        int ret;
 
        ldb = ldb_module_get_ctx(ac->module);
 
-       ac->sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
-       if (ac->sid == NULL) {
-               ac->sid = dom_sid_parse_talloc(ac->msg,
-                          (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
-               if (!ac->sid) {
+       sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
+       if (sid == NULL) {
+               sid = dom_sid_parse_talloc(ac->msg,
+                                          (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
+               if (sid == NULL) {
                        ldb_set_errstring(ldb,
                                        "No valid SID found in "
                                        "ForeignSecurityPrincipal CN!");
-                       talloc_free(ac);
                        return LDB_ERR_CONSTRAINT_VIOLATION;
                }
-               if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
-                       talloc_free(ac);
-                       return LDB_ERR_OPERATIONS_ERROR;
+               if (! samldb_msg_add_sid(ac->msg, "objectSid", sid)) {
+                       return ldb_operr(ldb);
                }
        }
 
@@ -1017,17 +891,17 @@ static int samldb_schema_info_update(struct samldb_ctx *ac)
                ldb_debug_set(ldb, LDB_DEBUG_FATAL,
                              "samldb_schema_info_update: no dsdb_schema loaded");
                DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
 
-       werr = dsdb_module_schema_info_update(ac->module, schema, 0);
+       werr = dsdb_module_schema_info_update(ac->module, schema, DSDB_FLAG_NEXT_MODULE);
        if (!W_ERROR_IS_OK(werr)) {
                ldb_debug_set(ldb, LDB_DEBUG_FATAL,
                              "samldb_schema_info_update: "
                              "dsdb_module_schema_info_update failed with %s",
                              win_errstr(werr));
                DEBUG(0,(__location__ ": %s\n", ldb_errstring(ldb)));
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
 
        return LDB_SUCCESS;
@@ -1068,13 +942,13 @@ static int samldb_prim_group_change(struct samldb_ctx *ac)
 
        sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
        if (sid == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
 
-       prev_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
-                                            dom_sid_string(ac, sid));
+       prev_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
+                                            ldap_encode_ndr_dom_sid(ac, sid));
        if (prev_prim_group_dn == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
 
        /* Finds out the DN of the new primary group */
@@ -1087,11 +961,11 @@ static int samldb_prim_group_change(struct samldb_ctx *ac)
 
        sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb), rid);
        if (sid == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
 
-       new_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
-                                           dom_sid_string(ac, sid));
+       new_prim_group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
+                                           ldap_encode_ndr_dom_sid(ac, sid));
        if (new_prim_group_dn == NULL) {
                /* Here we know if the specified new primary group candidate is
                 * valid or not. */
@@ -1118,7 +992,7 @@ static int samldb_prim_group_change(struct samldb_ctx *ac)
                        return ret;
                }
 
-               ret = dsdb_module_modify(ac->module, msg, 0);
+               ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
                if (ret != LDB_SUCCESS) {
                        return ret;
                }
@@ -1133,7 +1007,7 @@ static int samldb_prim_group_change(struct samldb_ctx *ac)
                        return ret;
                }
 
-               ret = dsdb_module_modify(ac->module, msg, 0);
+               ret = dsdb_module_modify(ac->module, msg, DSDB_FLAG_NEXT_MODULE);
                if (ret != LDB_SUCCESS) {
                        return ret;
                }
@@ -1165,7 +1039,7 @@ static int samldb_member_check(struct samldb_ctx *ac)
                 * for them */
                member_dn = ldb_dn_from_ldb_val(ac, ldb, &el->values[i]);
                if (!ldb_dn_validate(member_dn)) {
-                       return LDB_ERR_OPERATIONS_ERROR;
+                       return ldb_operr(ldb);
                }
 
                prim_group_rid = samdb_search_uint(ldb, ac, (uint32_t) -1,
@@ -1180,13 +1054,13 @@ static int samldb_member_check(struct samldb_ctx *ac)
                sid = dom_sid_add_rid(ac, samdb_domain_sid(ldb),
                                      prim_group_rid);
                if (sid == NULL) {
-                       return LDB_ERR_OPERATIONS_ERROR;
+                       return ldb_operr(ldb);
                }
 
-               group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSID=%s)",
-                                          dom_sid_string(ac, sid));
+               group_dn = samdb_search_dn(ldb, ac, NULL, "(objectSid=%s)",
+                                          ldap_encode_ndr_dom_sid(ac, sid));
                if (group_dn == NULL) {
-                       return LDB_ERR_OPERATIONS_ERROR;
+                       return ldb_operr(ldb);
                }
 
                if (ldb_dn_compare(group_dn, ac->msg->dn) == 0) {
@@ -1198,47 +1072,6 @@ static int samldb_member_check(struct samldb_ctx *ac)
 }
 
 
-static int samldb_prim_group_users_check(struct samldb_ctx *ac)
-{
-       struct ldb_context *ldb;
-       struct dom_sid *sid;
-       uint32_t rid;
-       NTSTATUS status;
-       int count;
-
-       ldb = ldb_module_get_ctx(ac->module);
-
-       /* Finds out the SID/RID of the SAM object */
-       sid = samdb_search_dom_sid(ldb, ac, ac->req->op.del.dn, "objectSID",
-                                  NULL);
-       if (sid == NULL) {
-               /* No SID - it might not be a SAM object - therefore ok */
-               return LDB_SUCCESS;
-       }
-       status = dom_sid_split_rid(ac, sid, NULL, &rid);
-       if (!NT_STATUS_IS_OK(status)) {
-               return LDB_ERR_OPERATIONS_ERROR;
-       }
-       if (rid == 0) {
-               /* Special object (security principal?) */
-               return LDB_SUCCESS;
-       }
-
-       /* Deny delete requests from groups which are primary ones */
-       count = samdb_search_count(ldb, NULL,
-                                  "(&(primaryGroupID=%u)(objectClass=user))",
-                                  rid);
-       if (count < 0) {
-               return LDB_ERR_OPERATIONS_ERROR;
-       }
-       if (count > 0) {
-               return LDB_ERR_ENTRY_ALREADY_EXISTS;
-       }
-
-       return LDB_SUCCESS;
-}
-
-
 /* add */
 static int samldb_add(struct ldb_module *module, struct ldb_request *req)
 {
@@ -1256,7 +1089,7 @@ static int samldb_add(struct ldb_module *module, struct ldb_request *req)
 
        ac = samldb_ctx_init(module, req);
        if (ac == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
 
        /* build the new msg */
@@ -1265,7 +1098,7 @@ static int samldb_add(struct ldb_module *module, struct ldb_request *req)
                talloc_free(ac);
                ldb_debug(ldb, LDB_DEBUG_FATAL,
                          "samldb_add: ldb_msg_copy failed!\n");
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
 
        if (samdb_find_attribute(ldb, ac->msg,
@@ -1346,13 +1179,13 @@ static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
 
        ac = samldb_ctx_init(module, req);
        if (ac == NULL) {
-               return LDB_ERR_OPERATIONS_ERROR;
+               return ldb_operr(ldb);
        }
 
        /* TODO: do not modify original request, create a new one */
 
        el = ldb_msg_find_element(req->op.mod.message, "groupType");
-       if (el && (el->flags == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
+       if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
                uint32_t group_type;
 
                req->op.mod.message = msg = ldb_msg_copy_shallow(req,
@@ -1369,12 +1202,12 @@ static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
                el2 = ldb_msg_find_element(msg, "sAMAccountType");
                el2->flags = LDB_FLAG_MOD_REPLACE;
        }
-       if (el && (el->flags == LDB_FLAG_MOD_DELETE)) {
+       if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
                return LDB_ERR_UNWILLING_TO_PERFORM;
        }
 
        el = ldb_msg_find_element(req->op.mod.message, "primaryGroupID");
-       if (el && (el->flags == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
+       if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
                req->op.mod.message = ac->msg = ldb_msg_copy_shallow(req,
                        req->op.mod.message);
 
@@ -1383,12 +1216,12 @@ static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
                        return ret;
                }
        }
-       if (el && (el->flags == LDB_FLAG_MOD_DELETE)) {
+       if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
                return LDB_ERR_UNWILLING_TO_PERFORM;
        }
 
        el = ldb_msg_find_element(req->op.mod.message, "userAccountControl");
-       if (el && (el->flags == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
+       if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
                uint32_t user_account_control;
 
                req->op.mod.message = msg = ldb_msg_copy_shallow(req,
@@ -1406,7 +1239,7 @@ static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
                el2 = ldb_msg_find_element(msg, "sAMAccountType");
                el2->flags = LDB_FLAG_MOD_REPLACE;
 
-               if (user_account_control & UF_SERVER_TRUST_ACCOUNT) {
+               if (user_account_control & (UF_SERVER_TRUST_ACCOUNT | UF_PARTIAL_SECRETS_ACCOUNT)) {
                        ret = samdb_msg_add_string(ldb, msg, msg,
                                                   "isCriticalSystemObject", "TRUE");
                        if (ret != LDB_SUCCESS) {
@@ -1414,20 +1247,22 @@ static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
                        }
                        el2 = ldb_msg_find_element(msg, "isCriticalSystemObject");
                        el2->flags = LDB_FLAG_MOD_REPLACE;
+               }
+
+               if (!ldb_msg_find_element(msg, "primaryGroupID")) {
+                       uint32_t rid = ds_uf2prim_group_rid(user_account_control);
 
-                       /* DCs have primaryGroupID of DOMAIN_RID_DCS */
-                       if (!ldb_msg_find_element(msg, "primaryGroupID")) {
-                               ret = samdb_msg_add_uint(ldb, msg, msg,
-                                                        "primaryGroupID", DOMAIN_RID_DCS);
-                               if (ret != LDB_SUCCESS) {
-                                       return ret;
-                               }
-                               el2 = ldb_msg_find_element(msg, "primaryGroupID");
-                               el2->flags = LDB_FLAG_MOD_REPLACE;
+                       ret = samdb_msg_add_uint(ldb, msg, msg,
+                                                "primaryGroupID", rid);
+                       if (ret != LDB_SUCCESS) {
+                               return ret;
                        }
+                       el2 = ldb_msg_find_element(msg,
+                                                  "primaryGroupID");
+                       el2->flags = LDB_FLAG_MOD_REPLACE;
                }
        }
-       if (el && (el->flags == LDB_FLAG_MOD_DELETE)) {
+       if (el && (LDB_FLAG_MOD_TYPE(el->flags) == LDB_FLAG_MOD_DELETE)) {
                return LDB_ERR_UNWILLING_TO_PERFORM;
        }
 
@@ -1446,6 +1281,47 @@ static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
 }
 
 /* delete */
+
+static int samldb_prim_group_users_check(struct samldb_ctx *ac)
+{
+       struct ldb_context *ldb;
+       struct dom_sid *sid;
+       uint32_t rid;
+       NTSTATUS status;
+       int count;
+
+       ldb = ldb_module_get_ctx(ac->module);
+
+       /* Finds out the SID/RID of the SAM object */
+       sid = samdb_search_dom_sid(ldb, ac, ac->req->op.del.dn, "objectSid",
+                                  NULL);
+       if (sid == NULL) {
+               /* No SID - it might not be a SAM object - therefore ok */
+               return LDB_SUCCESS;
+       }
+       status = dom_sid_split_rid(ac, sid, NULL, &rid);
+       if (!NT_STATUS_IS_OK(status)) {
+               return ldb_operr(ldb);
+       }
+       if (rid == 0) {
+               /* Special object (security principal?) */
+               return LDB_SUCCESS;
+       }
+
+       /* Deny delete requests from groups which are primary ones */
+       count = samdb_search_count(ldb, NULL,
+                                  "(&(primaryGroupID=%u)(objectClass=user))",
+                                  rid);
+       if (count < 0) {
+               return ldb_operr(ldb);
+       }
+       if (count > 0) {
+               return LDB_ERR_ENTRY_ALREADY_EXISTS;
+       }
+
+       return LDB_SUCCESS;
+}
+
 static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
 {
        struct samldb_ctx *ac;
@@ -1457,17 +1333,22 @@ static int samldb_delete(struct ldb_module *module, struct ldb_request *req)
        }
 
        ac = samldb_ctx_init(module, req);
-       if (ac == NULL)
-               return LDB_ERR_OPERATIONS_ERROR;
+       if (ac == NULL) {
+               return ldb_operr(ldb_module_get_ctx(module));
+       }
 
        ret = samldb_prim_group_users_check(ac);
        if (ret != LDB_SUCCESS) {
                return ret;
        }
 
+       talloc_free(ac);
+
        return ldb_next_request(module, req);
 }
 
+/* extended */
+
 static int samldb_extended_allocate_rid_pool(struct ldb_module *module, struct ldb_request *req)
 {
        struct ldb_context *ldb = ldb_module_get_ctx(module);