s3-talloc Change TALLOC_ZERO_P() to talloc_zero()
[nivanova/samba-autobuild/.git] / source3 / winbindd / winbindd_rpc.c
index e7003766d8218e6ab98c90bf7659a9164871eae4..bb1aa04bfa09de0e30e7bb453b4659a8afae2596 100644 (file)
-/* 
-   Unix SMB/CIFS implementation.
-
-   Winbind rpc backend functions
-
-   Copyright (C) Tim Potter 2000-2001,2003
-   Copyright (C) Andrew Tridgell 2001
-   Copyright (C) Volker Lendecke 2005
-   Copyright (C) Guenther Deschner 2008 (pidl conversion)
-
-   This program is free software; you can redistribute it and/or modify
-   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/>.
-*/
+/*
+ * Unix SMB/CIFS implementation.
+ *
+ * Winbind rpc backend functions
+ *
+ * Copyright (c) 2000-2003 Tim Potter
+ * Copyright (c) 2001      Andrew Tridgell
+ * Copyright (c) 2005      Volker Lendecke
+ * Copyright (c) 2008      Guenther Deschner (pidl conversion)
+ * Copyright (c) 2010      Andreas Schneider <asn@samba.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * 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 "winbindd.h"
-#include "../librpc/gen_ndr/cli_samr.h"
-#include "../librpc/gen_ndr/cli_lsa.h"
-
-#undef DBGC_CLASS
-#define DBGC_CLASS DBGC_WINBIND
-
-
-/* Query display info for a domain.  This returns enough information plus a
-   bit extra to give an overview of domain users for the User Manager
-   application. */
-static NTSTATUS query_user_list(struct winbindd_domain *domain,
-                              TALLOC_CTX *mem_ctx,
-                              uint32 *num_entries, 
-                              struct wbint_userinfo **info)
+#include "winbindd_rpc.h"
+#include "rpc_client/rpc_client.h"
+#include "librpc/gen_ndr/ndr_samr_c.h"
+#include "librpc/gen_ndr/ndr_lsa_c.h"
+#include "rpc_client/cli_samr.h"
+#include "rpc_client/cli_lsarpc.h"
+#include "../libcli/security/security.h"
+
+/* Query display info for a domain */
+NTSTATUS rpc_query_user_list(TALLOC_CTX *mem_ctx,
+                            struct rpc_pipe_client *samr_pipe,
+                            struct policy_handle *samr_policy,
+                            const struct dom_sid *domain_sid,
+                            uint32_t *pnum_info,
+                            struct wbint_userinfo **pinfo)
 {
-       NTSTATUS result;
-       struct policy_handle dom_pol;
-       unsigned int i, start_idx;
-       uint32 loop_count;
-       struct rpc_pipe_client *cli;
-
-       DEBUG(3,("rpc: query_user_list\n"));
-
-       *num_entries = 0;
-       *info = NULL;
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("query_user_list: No incoming trust for domain %s\n",
-                         domain->name));
-               return NT_STATUS_OK;
-       }
-
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result))
-               return result;
+       struct wbint_userinfo *info = NULL;
+       uint32_t num_info = 0;
+       uint32_t loop_count = 0;
+       uint32_t start_idx = 0;
+       uint32_t i = 0;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = samr_pipe->binding_handle;
 
-       i = start_idx = 0;
-       loop_count = 0;
+       *pnum_info = 0;
 
        do {
-               uint32 num_dom_users, j;
-               uint32 max_entries, max_size;
+               uint32_t j;
+               uint32_t num_dom_users;
+               uint32_t max_entries, max_size;
                uint32_t total_size, returned_size;
-
                union samr_DispInfo disp_info;
 
-               /* this next bit is copied from net_user_list_internal() */
+               dcerpc_get_query_dispinfo_params(loop_count,
+                                                &max_entries,
+                                                &max_size);
 
-               get_query_dispinfo_params(loop_count, &max_entries,
-                                         &max_size);
-
-               result = rpccli_samr_QueryDisplayInfo(cli, mem_ctx,
-                                                     &dom_pol,
-                                                     1,
+               status = dcerpc_samr_QueryDisplayInfo(b,
+                                                     mem_ctx,
+                                                     samr_policy,
+                                                     1, /* level */
                                                      start_idx,
                                                      max_entries,
                                                      max_size,
                                                      &total_size,
                                                      &returned_size,
-                                                     &disp_info);
-               num_dom_users = disp_info.info1.count;
+                                                     &disp_info,
+                                                     &result);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
+               }
+               if (!NT_STATUS_IS_OK(result)) {
+                       if (!NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES)) {
+                               return result;
+                       }
+               }
+
+               /* increment required start query values */
                start_idx += disp_info.info1.count;
                loop_count++;
+               num_dom_users = disp_info.info1.count;
 
-               *num_entries += num_dom_users;
-
-               *info = TALLOC_REALLOC_ARRAY(mem_ctx, *info,
-                                            struct wbint_userinfo,
-                                            *num_entries);
+               num_info += num_dom_users;
 
-               if (!(*info)) {
+               info = talloc_realloc(mem_ctx,
+                                           info,
+                                           struct wbint_userinfo,
+                                           num_info);
+               if (info == NULL) {
                        return NT_STATUS_NO_MEMORY;
                }
 
                for (j = 0; j < num_dom_users; i++, j++) {
-
                        uint32_t rid = disp_info.info1.entries[j].rid;
                        struct samr_DispEntryGeneral *src;
                        struct wbint_userinfo *dst;
 
                        src = &(disp_info.info1.entries[j]);
-                       dst = &((*info)[i]);
+                       dst = &(info[i]);
+
+                       dst->acct_name = talloc_strdup(info,
+                                                      src->account_name.string);
+                       if (dst->acct_name == NULL) {
+                               return NT_STATUS_NO_MEMORY;
+                       }
+
+                       dst->full_name = talloc_strdup(info, src->full_name.string);
+                       if ((src->full_name.string != NULL) &&
+                           (dst->full_name == NULL))
+                       {
+                               return NT_STATUS_NO_MEMORY;
+                       }
 
-                       dst->acct_name = talloc_strdup(
-                               mem_ctx, src->account_name.string);
-                       dst->full_name = talloc_strdup(
-                               mem_ctx, src->full_name.string);
                        dst->homedir = NULL;
                        dst->shell = NULL;
-                       sid_compose(&dst->user_sid, &domain->sid, rid);
+
+                       sid_compose(&dst->user_sid, domain_sid, rid);
 
                        /* For the moment we set the primary group for
                           every user to be the Domain Users group.
@@ -122,207 +130,196 @@ static NTSTATUS query_user_list(struct winbindd_domain *domain,
                           This should really be made into a 'winbind
                           force group' smb.conf parameter or
                           something like that. */
-
-                       sid_compose(&dst->group_sid, &domain->sid,
-                                   DOMAIN_GROUP_RID_USERS);
+                       sid_compose(&dst->group_sid, domain_sid,
+                                   DOMAIN_RID_USERS);
                }
-
        } while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
 
-       return result;
+       *pnum_info = num_info;
+       *pinfo = info;
+
+       return NT_STATUS_OK;
 }
 
-/* list all domain groups */
-static NTSTATUS enum_dom_groups(struct winbindd_domain *domain,
-                               TALLOC_CTX *mem_ctx,
-                               uint32 *num_entries, 
-                               struct acct_info **info)
+/* List all domain groups */
+NTSTATUS rpc_enum_dom_groups(TALLOC_CTX *mem_ctx,
+                            struct rpc_pipe_client *samr_pipe,
+                            struct policy_handle *samr_policy,
+                            uint32_t *pnum_info,
+                            struct wb_acct_info **pinfo)
 {
-       struct policy_handle dom_pol;
-       NTSTATUS status;
-       uint32 start = 0;
-       struct rpc_pipe_client *cli;
-
-       *num_entries = 0;
-       *info = NULL;
-
-       DEBUG(3,("rpc: enum_dom_groups\n"));
+       struct wb_acct_info *info = NULL;
+       uint32_t start = 0;
+       uint32_t num_info = 0;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = samr_pipe->binding_handle;
 
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("enum_domain_groups: No incoming trust for domain %s\n",
-                         domain->name));
-               return NT_STATUS_OK;
-       }
-
-       status = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(status))
-               return status;
+       *pnum_info = 0;
 
        do {
                struct samr_SamArray *sam_array = NULL;
-               uint32 count = 0;
-               TALLOC_CTX *mem_ctx2;
-               int g;
-
-               mem_ctx2 = talloc_init("enum_dom_groups[rpc]");
+               uint32_t count = 0;
+               uint32_t g;
 
                /* start is updated by this call. */
-               status = rpccli_samr_EnumDomainGroups(cli, mem_ctx2,
-                                                     &dom_pol,
+               status = dcerpc_samr_EnumDomainGroups(b,
+                                                     mem_ctx,
+                                                     samr_policy,
                                                      &start,
                                                      &sam_array,
                                                      0xFFFF, /* buffer size? */
-                                                     &count);
-
-               if (!NT_STATUS_IS_OK(status) &&
-                   !NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES)) {
-                       talloc_destroy(mem_ctx2);
-                       break;
+                                                     &count,
+                                                     &result);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
+               }
+               if (!NT_STATUS_IS_OK(result)) {
+                       if (!NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES)) {
+                               DEBUG(2,("query_user_list: failed to enum domain groups: %s\n",
+                                        nt_errstr(result)));
+                               return result;
+                       }
                }
 
-               (*info) = TALLOC_REALLOC_ARRAY(mem_ctx, *info,
-                                              struct acct_info,
-                                              (*num_entries) + count);
-               if (! *info) {
-                       talloc_destroy(mem_ctx2);
+               info = talloc_realloc(mem_ctx,
+                                           info,
+                                           struct wb_acct_info,
+                                           num_info + count);
+               if (info == NULL) {
                        return NT_STATUS_NO_MEMORY;
                }
 
-               for (g=0; g < count; g++) {
-
-                       fstrcpy((*info)[*num_entries + g].acct_name,
+               for (g = 0; g < count; g++) {
+                       fstrcpy(info[num_info + g].acct_name,
                                sam_array->entries[g].name.string);
-                       (*info)[*num_entries + g].rid = sam_array->entries[g].idx;
+
+                       info[num_info + g].rid = sam_array->entries[g].idx;
                }
 
-               (*num_entries) += count;
-               talloc_destroy(mem_ctx2);
-       } while (NT_STATUS_EQUAL(status, STATUS_MORE_ENTRIES));
+               num_info += count;
+       } while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
+
+       *pnum_info = num_info;
+       *pinfo = info;
 
        return NT_STATUS_OK;
 }
 
-/* List all domain groups */
-
-static NTSTATUS enum_local_groups(struct winbindd_domain *domain,
-                               TALLOC_CTX *mem_ctx,
-                               uint32 *num_entries, 
-                               struct acct_info **info)
+NTSTATUS rpc_enum_local_groups(TALLOC_CTX *mem_ctx,
+                              struct rpc_pipe_client *samr_pipe,
+                              struct policy_handle *samr_policy,
+                              uint32_t *pnum_info,
+                              struct wb_acct_info **pinfo)
 {
-       struct policy_handle dom_pol;
-       NTSTATUS result;
-       struct rpc_pipe_client *cli;
-
-       *num_entries = 0;
-       *info = NULL;
-
-       DEBUG(3,("rpc: enum_local_groups\n"));
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("enum_local_groups: No incoming trust for domain %s\n",
-                         domain->name));
-               return NT_STATUS_OK;
-       }
+       struct wb_acct_info *info = NULL;
+       uint32_t num_info = 0;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = samr_pipe->binding_handle;
 
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result))
-               return result;
+       *pnum_info = 0;
 
        do {
                struct samr_SamArray *sam_array = NULL;
-               uint32 count = 0, start = *num_entries;
-               TALLOC_CTX *mem_ctx2;
-               int g;
-
-               mem_ctx2 = talloc_init("enum_dom_local_groups[rpc]");
+               uint32_t count = 0;
+               uint32_t start = num_info;
+               uint32_t g;
 
-               result = rpccli_samr_EnumDomainAliases(cli, mem_ctx2,
-                                                      &dom_pol,
+               status = dcerpc_samr_EnumDomainAliases(b,
+                                                      mem_ctx,
+                                                      samr_policy,
                                                       &start,
                                                       &sam_array,
                                                       0xFFFF, /* buffer size? */
-                                                      &count);
-               if (!NT_STATUS_IS_OK(result) &&
-                   !NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES) )
-               {
-                       talloc_destroy(mem_ctx2);
-                       return result;
+                                                      &count,
+                                                      &result);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
                }
-
-               (*info) = TALLOC_REALLOC_ARRAY(mem_ctx, *info,
-                                              struct acct_info,
-                                              (*num_entries) + count);
-               if (! *info) {
-                       talloc_destroy(mem_ctx2);
-                       return NT_STATUS_NO_MEMORY;
+               if (!NT_STATUS_IS_OK(result)) {
+                       if (!NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES)) {
+                               return result;
+                       }
                }
 
-               for (g=0; g < count; g++) {
+               info = talloc_realloc(mem_ctx,
+                                           info,
+                                           struct wb_acct_info,
+                                           num_info + count);
+               if (info == NULL) {
+                       return  NT_STATUS_NO_MEMORY;
+               }
 
-                       fstrcpy((*info)[*num_entries + g].acct_name,
+               for (g = 0; g < count; g++) {
+                       fstrcpy(info[num_info + g].acct_name,
                                sam_array->entries[g].name.string);
-                       (*info)[*num_entries + g].rid = sam_array->entries[g].idx;
+                       info[num_info + g].rid = sam_array->entries[g].idx;
                }
 
-               (*num_entries) += count;
-               talloc_destroy(mem_ctx2);
-
+               num_info += count;
        } while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
 
+       *pnum_info = num_info;
+       *pinfo = info;
+
        return NT_STATUS_OK;
 }
 
 /* convert a single name to a sid in a domain */
-static NTSTATUS msrpc_name_to_sid(struct winbindd_domain *domain,
-                                 TALLOC_CTX *mem_ctx,
-                                 const char *domain_name,
-                                 const char *name,
-                                 uint32_t flags,
-                                 DOM_SID *sid,
-                                 enum lsa_SidType *type)
+NTSTATUS rpc_name_to_sid(TALLOC_CTX *mem_ctx,
+                        struct rpc_pipe_client *lsa_pipe,
+                        struct policy_handle *lsa_policy,
+                        const char *domain_name,
+                        const char *name,
+                        uint32_t flags,
+                        struct dom_sid *sid,
+                        enum lsa_SidType *type)
 {
-       NTSTATUS result;
-       DOM_SID *sids = NULL;
        enum lsa_SidType *types = NULL;
+       struct dom_sid *sids = NULL;
        char *full_name = NULL;
-       NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
        char *mapped_name = NULL;
+       NTSTATUS status;
 
-       if (name == NULL || *name=='\0') {
+       if (name == NULL || name[0] == '\0') {
                full_name = talloc_asprintf(mem_ctx, "%s", domain_name);
-       } else if (domain_name == NULL || *domain_name == '\0') {
+       } else if (domain_name == NULL || domain_name[0] == '\0') {
                full_name = talloc_asprintf(mem_ctx, "%s", name);
        } else {
                full_name = talloc_asprintf(mem_ctx, "%s\\%s", domain_name, name);
        }
-       if (!full_name) {
-               DEBUG(0, ("talloc_asprintf failed!\n"));
+
+       if (full_name == NULL) {
                return NT_STATUS_NO_MEMORY;
        }
 
-       DEBUG(3,("rpc: name_to_sid name=%s\n", full_name));
-
-       name_map_status = normalize_name_unmap(mem_ctx, full_name,
-                                              &mapped_name);
-
-       /* Reset the full_name pointer if we mapped anytthing */
-
-       if (NT_STATUS_IS_OK(name_map_status) ||
-           NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
-       {
+       status = normalize_name_unmap(mem_ctx, full_name, &mapped_name);
+       /* Reset the full_name pointer if we mapped anything */
+       if (NT_STATUS_IS_OK(status) ||
+           NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
                full_name = mapped_name;
        }
 
-       DEBUG(3,("name_to_sid [rpc] %s for domain %s\n",
-                full_name?full_name:"", domain_name ));
+       DEBUG(3,("name_to_sid: %s for domain %s\n",
+                full_name ? full_name : "", domain_name ));
 
-       result = winbindd_lookup_names(mem_ctx, domain, 1,
-                                      (const char **)&full_name, NULL,
-                                      &sids, &types);
-       if (!NT_STATUS_IS_OK(result))
-               return result;
-
-       /* Return rid and type if lookup successful */
+       /*
+        * We don't run into deadlocks here, cause winbind_off() is
+        * called in the main function.
+        */
+       status = rpccli_lsa_lookup_names(lsa_pipe,
+                                        mem_ctx,
+                                        lsa_policy,
+                                        1, /* num_names */
+                                        (const char **) &full_name,
+                                        NULL, /* domains */
+                                        1, /* level */
+                                        &sids,
+                                        &types);
+       if (!NT_STATUS_IS_OK(status)) {
+               DEBUG(2,("name_to_sid: failed to lookup name: %s\n",
+                       nt_errstr(status)));
+               return status;
+       }
 
        sid_copy(sid, &sids[0]);
        *type = types[0];
@@ -330,77 +327,84 @@ static NTSTATUS msrpc_name_to_sid(struct winbindd_domain *domain,
        return NT_STATUS_OK;
 }
 
-/*
-  convert a domain SID to a user or group name
-*/
-static NTSTATUS msrpc_sid_to_name(struct winbindd_domain *domain,
-                                 TALLOC_CTX *mem_ctx,
-                                 const DOM_SID *sid,
-                                 char **domain_name,
-                                 char **name,
-                                 enum lsa_SidType *type)
+/* Convert a domain SID to a user or group name */
+NTSTATUS rpc_sid_to_name(TALLOC_CTX *mem_ctx,
+                        struct rpc_pipe_client *lsa_pipe,
+                        struct policy_handle *lsa_policy,
+                        struct winbindd_domain *domain,
+                        const struct dom_sid *sid,
+                        char **pdomain_name,
+                        char **pname,
+                        enum lsa_SidType *ptype)
 {
-       char **domains;
-       char **names;
-       enum lsa_SidType *types = NULL;
-       NTSTATUS result;
-       NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
        char *mapped_name = NULL;
+       char **domains = NULL;
+       char **names = NULL;
+       enum lsa_SidType *types = NULL;
+       NTSTATUS map_status;
+       NTSTATUS status;
 
-       DEBUG(3,("sid_to_name [rpc] %s for domain %s\n", sid_string_dbg(sid),
-                domain->name ));
-
-       result = winbindd_lookup_sids(mem_ctx,
-                                     domain,
-                                     1,
-                                     sid,
-                                     &domains,
-                                     &names,
-                                     &types);
-       if (!NT_STATUS_IS_OK(result)) {
-               DEBUG(2,("msrpc_sid_to_name: failed to lookup sids: %s\n",
-                       nt_errstr(result)));
-               return result;
+       status = rpccli_lsa_lookup_sids(lsa_pipe,
+                                       mem_ctx,
+                                       lsa_policy,
+                                       1, /* num_sids */
+                                       sid,
+                                       &domains,
+                                       &names,
+                                       &types);
+       if (!NT_STATUS_IS_OK(status)) {
+               DEBUG(2,("sid_to_name: failed to lookup sids: %s\n",
+                       nt_errstr(status)));
+               return status;
        }
 
+       *ptype = (enum lsa_SidType) types[0];
 
-       *type = (enum lsa_SidType)types[0];
-       *domain_name = domains[0];
-       *name = names[0];
-
-       DEBUG(5,("Mapped sid to [%s]\\[%s]\n", domains[0], *name));
+       map_status = normalize_name_map(mem_ctx,
+                                       domain,
+                                       *pname,
+                                       &mapped_name);
+       if (NT_STATUS_IS_OK(map_status) ||
+           NT_STATUS_EQUAL(map_status, NT_STATUS_FILE_RENAMED)) {
+               *pname = talloc_strdup(mem_ctx, mapped_name);
+               DEBUG(5,("returning mapped name -- %s\n", *pname));
+       } else {
+               *pname = talloc_strdup(mem_ctx, names[0]);
+       }
+       if (*pname == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
-       name_map_status = normalize_name_map(mem_ctx, domain, *name,
-                                            &mapped_name);
-       if (NT_STATUS_IS_OK(name_map_status) ||
-           NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
-       {
-               *name = mapped_name;
-               DEBUG(5,("returning mapped name -- %s\n", *name));
+       *pdomain_name = talloc_strdup(mem_ctx, domains[0]);
+       if (*pdomain_name == NULL) {
+               return NT_STATUS_NO_MEMORY;
        }
 
        return NT_STATUS_OK;
 }
 
-static NTSTATUS msrpc_rids_to_names(struct winbindd_domain *domain,
-                                   TALLOC_CTX *mem_ctx,
-                                   const DOM_SID *sid,
-                                   uint32 *rids,
-                                   size_t num_rids,
-                                   char **domain_name,
-                                   char ***names,
-                                   enum lsa_SidType **types)
+/* Convert a bunch of rids to user or group names */
+NTSTATUS rpc_rids_to_names(TALLOC_CTX *mem_ctx,
+                          struct rpc_pipe_client *lsa_pipe,
+                          struct policy_handle *lsa_policy,
+                          struct winbindd_domain *domain,
+                          const struct dom_sid *sid,
+                          uint32_t *rids,
+                          size_t num_rids,
+                          char **pdomain_name,
+                          char ***pnames,
+                          enum lsa_SidType **ptypes)
 {
-       char **domains;
-       NTSTATUS result;
-       DOM_SID *sids;
+       enum lsa_SidType *types = NULL;
+       char *domain_name = NULL;
+       char **domains = NULL;
+       char **names = NULL;
+       struct dom_sid *sids;
        size_t i;
-       char **ret_names;
-
-       DEBUG(3, ("rids_to_names [rpc] for domain %s\n", domain->name ));
+       NTSTATUS status;
 
-       if (num_rids) {
-               sids = TALLOC_ARRAY(mem_ctx, DOM_SID, num_rids);
+       if (num_rids > 0) {
+               sids = talloc_array(mem_ctx, struct dom_sid, num_rids);
                if (sids == NULL) {
                        return NT_STATUS_NO_MEMORY;
                }
@@ -408,250 +412,225 @@ static NTSTATUS msrpc_rids_to_names(struct winbindd_domain *domain,
                sids = NULL;
        }
 
-       for (i=0; i<num_rids; i++) {
+       for (i = 0; i < num_rids; i++) {
                if (!sid_compose(&sids[i], sid, rids[i])) {
                        return NT_STATUS_INTERNAL_ERROR;
                }
        }
 
-       result = winbindd_lookup_sids(mem_ctx,
-                                     domain,
-                                     num_rids,
-                                     sids,
-                                     &domains,
-                                     names,
-                                     types);
-
-       if (!NT_STATUS_IS_OK(result) &&
-           !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED)) {
-               return result;
+       status = rpccli_lsa_lookup_sids(lsa_pipe,
+                                       mem_ctx,
+                                       lsa_policy,
+                                       num_rids,
+                                       sids,
+                                       &domains,
+                                       &names,
+                                       &types);
+       if (!NT_STATUS_IS_OK(status) &&
+           !NT_STATUS_EQUAL(status, STATUS_SOME_UNMAPPED)) {
+               DEBUG(2,("rids_to_names: failed to lookup sids: %s\n",
+                       nt_errstr(status)));
+               return status;
        }
 
-       ret_names = *names;
-       for (i=0; i<num_rids; i++) {
-               NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
+       for (i = 0; i < num_rids; i++) {
                char *mapped_name = NULL;
-
-               if ((*types)[i] != SID_NAME_UNKNOWN) {
-                       name_map_status = normalize_name_map(mem_ctx,
-                                                            domain,
-                                                            ret_names[i],
-                                                            &mapped_name);
-                       if (NT_STATUS_IS_OK(name_map_status) ||
-                           NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
-                       {
-                               ret_names[i] = mapped_name;
+               NTSTATUS map_status;
+
+               if (types[i] != SID_NAME_UNKNOWN) {
+                       map_status = normalize_name_map(mem_ctx,
+                                                       domain,
+                                                       names[i],
+                                                       &mapped_name);
+                       if (NT_STATUS_IS_OK(map_status) ||
+                           NT_STATUS_EQUAL(map_status, NT_STATUS_FILE_RENAMED)) {
+                               TALLOC_FREE(names[i]);
+                               names[i] = talloc_strdup(names, mapped_name);
+                               if (names[i] == NULL) {
+                                       return NT_STATUS_NO_MEMORY;
+                               }
                        }
 
-                       *domain_name = domains[i];
+                       domain_name = domains[i];
                }
        }
 
-       return result;
+       *pdomain_name = domain_name;
+       *ptypes = types;
+       *pnames = names;
+
+       return NT_STATUS_OK;
 }
 
 /* Lookup user information from a rid or username. */
-static NTSTATUS query_user(struct winbindd_domain *domain, 
-                          TALLOC_CTX *mem_ctx, 
-                          const DOM_SID *user_sid, 
-                          struct wbint_userinfo *user_info)
+NTSTATUS rpc_query_user(TALLOC_CTX *mem_ctx,
+                       struct rpc_pipe_client *samr_pipe,
+                       struct policy_handle *samr_policy,
+                       const struct dom_sid *domain_sid,
+                       const struct dom_sid *user_sid,
+                       struct wbint_userinfo *user_info)
 {
-       NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
-       struct policy_handle dom_pol, user_pol;
+       struct policy_handle user_policy;
        union samr_UserInfo *info = NULL;
-       uint32 user_rid;
-       struct netr_SamInfo3 *user;
-       struct rpc_pipe_client *cli;
-
-       DEBUG(3,("rpc: query_user sid=%s\n", sid_string_dbg(user_sid)));
+       uint32_t user_rid;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = samr_pipe->binding_handle;
 
-       if (!sid_peek_check_rid(&domain->sid, user_sid, &user_rid))
+       if (!sid_peek_check_rid(domain_sid, user_sid, &user_rid)) {
                return NT_STATUS_UNSUCCESSFUL;
-
-       user_info->homedir = NULL;
-       user_info->shell = NULL;
-       user_info->primary_gid = (gid_t)-1;
-
-       /* try netsamlogon cache first */
-
-       if ( (user = netsamlogon_cache_get( mem_ctx, user_sid )) != NULL ) 
-       {
-
-               DEBUG(5,("query_user: Cache lookup succeeded for %s\n", 
-                       sid_string_dbg(user_sid)));
-
-               sid_compose(&user_info->user_sid, &domain->sid, user->base.rid);
-               sid_compose(&user_info->group_sid, &domain->sid,
-                           user->base.primary_gid);
-
-               user_info->acct_name = talloc_strdup(mem_ctx,
-                                                    user->base.account_name.string);
-               user_info->full_name = talloc_strdup(mem_ctx,
-                                                    user->base.full_name.string);
-
-               TALLOC_FREE(user);
-
-               return NT_STATUS_OK;
-       }
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("query_user: No incoming trust for domain %s\n",
-                         domain->name));
-               return NT_STATUS_OK;
        }
 
-       /* no cache; hit the wire */
-
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result))
-               return result;
-
        /* Get user handle */
-       result = rpccli_samr_OpenUser(cli, mem_ctx,
-                                     &dom_pol,
+       status = dcerpc_samr_OpenUser(b,
+                                     mem_ctx,
+                                     samr_policy,
                                      SEC_FLAG_MAXIMUM_ALLOWED,
                                      user_rid,
-                                     &user_pol);
-
-       if (!NT_STATUS_IS_OK(result))
+                                     &user_policy,
+                                     &result);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+       if (!NT_STATUS_IS_OK(result)) {
                return result;
+       }
 
        /* Get user info */
-       result = rpccli_samr_QueryUserInfo(cli, mem_ctx,
-                                          &user_pol,
+       status = dcerpc_samr_QueryUserInfo(b,
+                                          mem_ctx,
+                                          &user_policy,
                                           0x15,
-                                          &info);
-
-       rpccli_samr_Close(cli, mem_ctx, &user_pol);
-
-       if (!NT_STATUS_IS_OK(result))
+                                          &info,
+                                          &result);
+       {
+               NTSTATUS _result;
+               dcerpc_samr_Close(b, mem_ctx, &user_policy, &_result);
+       }
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+       if (!NT_STATUS_IS_OK(result)) {
                return result;
+       }
 
-       sid_compose(&user_info->user_sid, &domain->sid, user_rid);
-       sid_compose(&user_info->group_sid, &domain->sid,
+       sid_compose(&user_info->user_sid, domain_sid, user_rid);
+       sid_compose(&user_info->group_sid, domain_sid,
                    info->info21.primary_gid);
-       user_info->acct_name = talloc_strdup(mem_ctx,
-                                            info->info21.account_name.string);
-       user_info->full_name = talloc_strdup(mem_ctx,
-                                            info->info21.full_name.string);
+
+       user_info->acct_name = talloc_strdup(user_info,
+                                       info->info21.account_name.string);
+       if (user_info->acct_name == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       user_info->full_name = talloc_strdup(user_info,
+                                       info->info21.full_name.string);
+       if ((info->info21.full_name.string != NULL) &&
+           (user_info->acct_name == NULL))
+       {
+               return NT_STATUS_NO_MEMORY;
+       }
+
        user_info->homedir = NULL;
        user_info->shell = NULL;
        user_info->primary_gid = (gid_t)-1;
 
        return NT_STATUS_OK;
-}                                   
+}
 
-/* Lookup groups a user is a member of.  I wish Unix had a call like this! */
-static NTSTATUS lookup_usergroups(struct winbindd_domain *domain,
-                                 TALLOC_CTX *mem_ctx,
-                                 const DOM_SID *user_sid,
-                                 uint32 *num_groups, DOM_SID **user_grpsids)
+/* Lookup groups a user is a member of. */
+NTSTATUS rpc_lookup_usergroups(TALLOC_CTX *mem_ctx,
+                              struct rpc_pipe_client *samr_pipe,
+                              struct policy_handle *samr_policy,
+                              const struct dom_sid *domain_sid,
+                              const struct dom_sid *user_sid,
+                              uint32_t *pnum_groups,
+                              struct dom_sid **puser_grpsids)
 {
-       NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
-       struct policy_handle dom_pol, user_pol;
-       uint32 des_access = SEC_FLAG_MAXIMUM_ALLOWED;
+       struct policy_handle user_policy;
        struct samr_RidWithAttributeArray *rid_array = NULL;
-       unsigned int i;
-       uint32 user_rid;
-       struct rpc_pipe_client *cli;
-
-       DEBUG(3,("rpc: lookup_usergroups sid=%s\n", sid_string_dbg(user_sid)));
+       struct dom_sid *user_grpsids = NULL;
+       uint32_t num_groups = 0, i;
+       uint32_t user_rid;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = samr_pipe->binding_handle;
 
-       if (!sid_peek_check_rid(&domain->sid, user_sid, &user_rid))
+       if (!sid_peek_check_rid(domain_sid, user_sid, &user_rid)) {
                return NT_STATUS_UNSUCCESSFUL;
-
-       *num_groups = 0;
-       *user_grpsids = NULL;
-
-       /* so lets see if we have a cached user_info_3 */
-       result = lookup_usergroups_cached(domain, mem_ctx, user_sid, 
-                                         num_groups, user_grpsids);
-
-       if (NT_STATUS_IS_OK(result)) {
-               return NT_STATUS_OK;
-       }
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("lookup_usergroups: No incoming trust for domain %s\n",
-                         domain->name));
-
-               /* Tell the cache manager not to remember this one */
-
-               return NT_STATUS_SYNCHRONIZATION_REQUIRED;
        }
 
-       /* no cache; hit the wire */
-
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result))
-               return result;
-
        /* Get user handle */
-       result = rpccli_samr_OpenUser(cli, mem_ctx,
-                                     &dom_pol,
-                                     des_access,
+       status = dcerpc_samr_OpenUser(b,
+                                     mem_ctx,
+                                     samr_policy,
+                                     SEC_FLAG_MAXIMUM_ALLOWED,
                                      user_rid,
-                                     &user_pol);
-
-       if (!NT_STATUS_IS_OK(result))
+                                     &user_policy,
+                                     &result);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+       if (!NT_STATUS_IS_OK(result)) {
                return result;
+       }
 
        /* Query user rids */
-       result = rpccli_samr_GetGroupsForUser(cli, mem_ctx,
-                                             &user_pol,
-                                             &rid_array);
-       *num_groups = rid_array->count;
+       status = dcerpc_samr_GetGroupsForUser(b,
+                                             mem_ctx,
+                                             &user_policy,
+                                             &rid_array,
+                                             &result);
+       num_groups = rid_array->count;
 
-       rpccli_samr_Close(cli, mem_ctx, &user_pol);
+       {
+               NTSTATUS _result;
+               dcerpc_samr_Close(b, mem_ctx, &user_policy, &_result);
+       }
 
-       if (!NT_STATUS_IS_OK(result) || (*num_groups) == 0)
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
+       if (!NT_STATUS_IS_OK(result) || num_groups == 0) {
                return result;
+       }
 
-       (*user_grpsids) = TALLOC_ARRAY(mem_ctx, DOM_SID, *num_groups);
-       if (!(*user_grpsids))
-               return NT_STATUS_NO_MEMORY;
+       user_grpsids = talloc_array(mem_ctx, struct dom_sid, num_groups);
+       if (user_grpsids == NULL) {
+               status = NT_STATUS_NO_MEMORY;
+               return status;
+       }
 
-       for (i=0;i<(*num_groups);i++) {
-               sid_copy(&((*user_grpsids)[i]), &domain->sid);
-               sid_append_rid(&((*user_grpsids)[i]),
-                               rid_array->rids[i].rid);
+       for (i = 0; i < num_groups; i++) {
+               sid_compose(&(user_grpsids[i]), domain_sid,
+                           rid_array->rids[i].rid);
        }
 
+       *pnum_groups = num_groups;
+
+       *puser_grpsids = user_grpsids;
+
        return NT_STATUS_OK;
 }
 
-#define MAX_SAM_ENTRIES_W2K 0x400 /* 1024 */
-
-static NTSTATUS msrpc_lookup_useraliases(struct winbindd_domain *domain,
-                                        TALLOC_CTX *mem_ctx,
-                                        uint32 num_sids, const DOM_SID *sids,
-                                        uint32 *num_aliases,
-                                        uint32 **alias_rids)
+NTSTATUS rpc_lookup_useraliases(TALLOC_CTX *mem_ctx,
+                               struct rpc_pipe_client *samr_pipe,
+                               struct policy_handle *samr_policy,
+                               uint32_t num_sids,
+                               const struct dom_sid *sids,
+                               uint32_t *pnum_aliases,
+                               uint32_t **palias_rids)
 {
-       NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
-       struct policy_handle dom_pol;
-       uint32 num_query_sids = 0;
-       int i;
-       struct rpc_pipe_client *cli;
+#define MAX_SAM_ENTRIES_W2K 0x400 /* 1024 */
+       uint32_t num_query_sids = 0;
+       uint32_t num_queries = 1;
+       uint32_t num_aliases = 0;
+       uint32_t total_sids = 0;
+       uint32_t *alias_rids = NULL;
+       uint32_t rangesize = MAX_SAM_ENTRIES_W2K;
+       uint32_t i;
        struct samr_Ids alias_rids_query;
-       int rangesize = MAX_SAM_ENTRIES_W2K;
-       uint32 total_sids = 0;
-       int num_queries = 1;
-
-       *num_aliases = 0;
-       *alias_rids = NULL;
-
-       DEBUG(3,("rpc: lookup_useraliases\n"));
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("msrpc_lookup_useraliases: No incoming trust for domain %s\n",
-                         domain->name));
-               return NT_STATUS_OK;
-       }
-
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result))
-               return result;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = samr_pipe->binding_handle;
 
        do {
                /* prepare query */
@@ -661,8 +640,8 @@ static NTSTATUS msrpc_lookup_useraliases(struct winbindd_domain *domain,
 
                num_query_sids = MIN(num_sids - total_sids, rangesize);
 
-               DEBUG(10,("rpc: lookup_useraliases: entering query %d for %d sids\n", 
-                       num_queries, num_query_sids));  
+               DEBUG(10,("rpc: lookup_useraliases: entering query %d for %d sids\n",
+                       num_queries, num_query_sids));
 
                if (num_query_sids) {
                        sid_array.sids = TALLOC_ZERO_ARRAY(mem_ctx, struct lsa_SidPtr, num_query_sids);
@@ -673,663 +652,479 @@ static NTSTATUS msrpc_lookup_useraliases(struct winbindd_domain *domain,
                        sid_array.sids = NULL;
                }
 
-               for (i=0; i<num_query_sids; i++) {
-                       sid_array.sids[i].sid = sid_dup_talloc(mem_ctx, &sids[total_sids++]);
-                       if (!sid_array.sids[i].sid) {
-                               TALLOC_FREE(sid_array.sids);
+               for (i = 0; i < num_query_sids; i++) {
+                       sid_array.sids[i].sid = dom_sid_dup(mem_ctx, &sids[total_sids++]);
+                       if (sid_array.sids[i].sid == NULL) {
                                return NT_STATUS_NO_MEMORY;
                        }
                }
                sid_array.num_sids = num_query_sids;
 
                /* do request */
-               result = rpccli_samr_GetAliasMembership(cli, mem_ctx,
-                                                       &dom_pol,
+               status = dcerpc_samr_GetAliasMembership(b,
+                                                       mem_ctx,
+                                                       samr_policy,
                                                        &sid_array,
-                                                       &alias_rids_query);
-
+                                                       &alias_rids_query,
+                                                       &result);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
+               }
                if (!NT_STATUS_IS_OK(result)) {
-                       *num_aliases = 0;
-                       *alias_rids = NULL;
-                       TALLOC_FREE(sid_array.sids);
-                       goto done;
+                       return result;
                }
 
                /* process output */
-
-               for (i=0; i<alias_rids_query.count; i++) {
-                       size_t na = *num_aliases;
-                       if (!add_rid_to_array_unique(mem_ctx, alias_rids_query.ids[i],
-                                               alias_rids, &na)) {
-                               return NT_STATUS_NO_MEMORY;
-                       }
-                       *num_aliases = na;
+               for (i = 0; i < alias_rids_query.count; i++) {
+                       size_t na = num_aliases;
+
+                       if (!add_rid_to_array_unique(mem_ctx,
+                                                    alias_rids_query.ids[i],
+                                                    &alias_rids,
+                                                    &na)) {
+                                       return NT_STATUS_NO_MEMORY;
+                               }
+                               num_aliases = na;
                }
 
-               TALLOC_FREE(sid_array.sids);
-
                num_queries++;
 
        } while (total_sids < num_sids);
 
- done:
-       DEBUG(10,("rpc: lookup_useraliases: got %d aliases in %d queries "
-               "(rangesize: %d)\n", *num_aliases, num_queries, rangesize));
+       DEBUG(10,("rpc: rpc_lookup_useraliases: got %d aliases in %d queries "
+                 "(rangesize: %d)\n", num_aliases, num_queries, rangesize));
 
-       return result;
-}
+       *pnum_aliases = num_aliases;
+       *palias_rids = alias_rids;
 
+       return NT_STATUS_OK;
+#undef MAX_SAM_ENTRIES_W2K
+}
 
 /* Lookup group membership given a rid.   */
-static NTSTATUS lookup_groupmem(struct winbindd_domain *domain,
-                               TALLOC_CTX *mem_ctx,
-                               const DOM_SID *group_sid,
-                               enum lsa_SidType type,
-                               uint32 *num_names,
-                               DOM_SID **sid_mem, char ***names, 
-                               uint32 **name_types)
+NTSTATUS rpc_lookup_groupmem(TALLOC_CTX *mem_ctx,
+                            struct rpc_pipe_client *samr_pipe,
+                            struct policy_handle *samr_policy,
+                            const char *domain_name,
+                            const struct dom_sid *domain_sid,
+                            const struct dom_sid *group_sid,
+                            enum lsa_SidType type,
+                            uint32_t *pnum_names,
+                            struct dom_sid **psid_mem,
+                            char ***pnames,
+                            uint32_t **pname_types)
 {
-        NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
-        uint32 i, total_names = 0;
-        struct policy_handle dom_pol, group_pol;
-        uint32 des_access = SEC_FLAG_MAXIMUM_ALLOWED;
-       uint32 *rid_mem = NULL;
-       uint32 group_rid;
-       unsigned int j, r;
-       struct rpc_pipe_client *cli;
-       unsigned int orig_timeout;
-       struct samr_RidTypeArray *rids = NULL;
-
-       DEBUG(10,("rpc: lookup_groupmem %s sid=%s\n", domain->name,
-                 sid_string_dbg(group_sid)));
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("lookup_groupmem: No incoming trust for domain %s\n",
-                         domain->name));
-               return NT_STATUS_OK;
-       }
-
-       if (!sid_peek_check_rid(&domain->sid, group_sid, &group_rid))
-               return NT_STATUS_UNSUCCESSFUL;
-
-       *num_names = 0;
-
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result))
-               return result;
-
-        result = rpccli_samr_OpenGroup(cli, mem_ctx,
-                                      &dom_pol,
-                                      des_access,
-                                      group_rid,
-                                      &group_pol);
-
-        if (!NT_STATUS_IS_OK(result))
-               return result;
-
-        /* Step #1: Get a list of user rids that are the members of the
-           group. */
-
-       /* This call can take a long time - allow the server to time out.
-          35 seconds should do it. */
-
-       orig_timeout = rpccli_set_timeout(cli, 35000);
+       struct policy_handle group_policy;
+       uint32_t group_rid;
+       uint32_t *rid_mem = NULL;
 
-        result = rpccli_samr_QueryGroupMember(cli, mem_ctx,
-                                             &group_pol,
-                                             &rids);
+       uint32_t num_names = 0;
+       uint32_t total_names = 0;
+       struct dom_sid *sid_mem = NULL;
+       char **names = NULL;
+       uint32_t *name_types = NULL;
 
-       /* And restore our original timeout. */
-       rpccli_set_timeout(cli, orig_timeout);
+       struct lsa_Strings tmp_names;
+       struct samr_Ids tmp_types;
 
-       rpccli_samr_Close(cli, mem_ctx, &group_pol);
+       uint32_t j, r;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = samr_pipe->binding_handle;
 
-        if (!NT_STATUS_IS_OK(result))
-               return result;
-
-       if (!rids || !rids->count) {
-               names = NULL;
-               name_types = NULL;
-               sid_mem = NULL;
-               return NT_STATUS_OK;
+       if (!sid_peek_check_rid(domain_sid, group_sid, &group_rid)) {
+               return NT_STATUS_UNSUCCESSFUL;
        }
 
-       *num_names = rids->count;
-       rid_mem = rids->rids;
-
-        /* Step #2: Convert list of rids into list of usernames.  Do this
-           in bunches of ~1000 to avoid crashing NT4.  It looks like there
-           is a buffer overflow or something like that lurking around
-           somewhere. */
-
-#define MAX_LOOKUP_RIDS 900
+       switch(type) {
+       case SID_NAME_DOM_GRP:
+       {
+               struct samr_RidAttrArray *rids = NULL;
+
+               status = dcerpc_samr_OpenGroup(b,
+                                              mem_ctx,
+                                              samr_policy,
+                                              SEC_FLAG_MAXIMUM_ALLOWED,
+                                              group_rid,
+                                              &group_policy,
+                                              &result);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
+               }
+               if (!NT_STATUS_IS_OK(result)) {
+                       return result;
+               }
 
-        *names = TALLOC_ZERO_ARRAY(mem_ctx, char *, *num_names);
-        *name_types = TALLOC_ZERO_ARRAY(mem_ctx, uint32, *num_names);
-        *sid_mem = TALLOC_ZERO_ARRAY(mem_ctx, DOM_SID, *num_names);
+               /*
+                * Step #1: Get a list of user rids that are the members of the group.
+                */
+               status = dcerpc_samr_QueryGroupMember(b,
+                                                     mem_ctx,
+                                                     &group_policy,
+                                                     &rids,
+                                                     &result);
+               {
+                       NTSTATUS _result;
+                       dcerpc_samr_Close(b, mem_ctx, &group_policy, &_result);
+               }
 
-       for (j=0;j<(*num_names);j++)
-               sid_compose(&(*sid_mem)[j], &domain->sid, rid_mem[j]);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
+               }
+               if (!NT_STATUS_IS_OK(result)) {
+                       return result;
+               }
 
-       if (*num_names>0 && (!*names || !*name_types))
-               return NT_STATUS_NO_MEMORY;
 
-       for (i = 0; i < *num_names; i += MAX_LOOKUP_RIDS) {
-               int num_lookup_rids = MIN(*num_names - i, MAX_LOOKUP_RIDS);
-               struct lsa_Strings tmp_names;
-               struct samr_Ids tmp_types;
+               if (rids == NULL || rids->count == 0) {
+                       pnum_names = 0;
+                       pnames = NULL;
+                       pname_types = NULL;
+                       psid_mem = NULL;
 
-               /* Lookup a chunk of rids */
+                       return NT_STATUS_OK;
+               }
 
-               result = rpccli_samr_LookupRids(cli, mem_ctx,
-                                               &dom_pol,
-                                               num_lookup_rids,
-                                               &rid_mem[i],
-                                               &tmp_names,
-                                               &tmp_types);
+               num_names = rids->count;
+               rid_mem = rids->rids;
 
-               /* see if we have a real error (and yes the
-                  STATUS_SOME_UNMAPPED is the one returned from 2k) */
+               break;
+       }
+       case SID_NAME_WKN_GRP:
+       case SID_NAME_ALIAS:
+       {
+               struct lsa_SidArray sid_array;
+               struct lsa_SidPtr sid_ptr;
+               struct samr_Ids rids_query;
 
-                if (!NT_STATUS_IS_OK(result) &&
-                   !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED))
-                       return result;
+               sid_ptr.sid = dom_sid_dup(mem_ctx, group_sid);
+               if (sid_ptr.sid == NULL) {
+                       return NT_STATUS_NO_MEMORY;
+               }
 
-               /* Copy result into array.  The talloc system will take
-                  care of freeing the temporary arrays later on. */
+               sid_array.num_sids = 1;
+               sid_array.sids = &sid_ptr;
 
-               if (tmp_names.count != tmp_types.count) {
-                       return NT_STATUS_UNSUCCESSFUL;
+               status = dcerpc_samr_GetAliasMembership(b,
+                                                       mem_ctx,
+                                                       samr_policy,
+                                                       &sid_array,
+                                                       &rids_query,
+                                                       &result);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
                }
-
-               for (r=0; r<tmp_names.count; r++) {
-                       if (tmp_types.ids[r] == SID_NAME_UNKNOWN) {
-                               continue;
-                       }
-                       (*names)[total_names] = fill_domain_username_talloc(
-                               mem_ctx, domain->name,
-                               tmp_names.names[r].string, true);
-                       (*name_types)[total_names] = tmp_types.ids[r];
-                       total_names += 1;
+               if (!NT_STATUS_IS_OK(result)) {
+                       return result;
                }
-        }
-
-        *num_names = total_names;
-
-       return NT_STATUS_OK;
-}
 
-#ifdef HAVE_LDAP
+               if (rids_query.count == 0) {
+                       pnum_names = 0;
+                       pnames = NULL;
+                       pname_types = NULL;
+                       psid_mem = NULL;
 
-#include <ldap.h>
+                       return NT_STATUS_OK;
+               }
 
-static int get_ldap_seq(const char *server, int port, uint32 *seq)
-{
-       int ret = -1;
-       struct timeval to;
-       const char *attrs[] = {"highestCommittedUSN", NULL};
-       LDAPMessage *res = NULL;
-       char **values = NULL;
-       LDAP *ldp = NULL;
+               num_names = rids_query.count;
+               rid_mem = rids_query.ids;
 
-       *seq = DOM_SEQUENCE_NONE;
+               break;
+       }
+       default:
+               return NT_STATUS_UNSUCCESSFUL;
+       }
 
        /*
-        * Parameterised (5) second timeout on open. This is needed as the
-        * search timeout doesn't seem to apply to doing an open as well. JRA.
+        * Step #2: Convert list of rids into list of usernames.
         */
-
-       ldp = ldap_open_with_timeout(server, port, lp_ldap_timeout());
-       if (ldp == NULL)
-               return -1;
-
-       /* Timeout if no response within 20 seconds. */
-       to.tv_sec = 10;
-       to.tv_usec = 0;
-
-       if (ldap_search_st(ldp, "", LDAP_SCOPE_BASE, "(objectclass=*)",
-                          CONST_DISCARD(char **, attrs), 0, &to, &res))
-               goto done;
-
-       if (ldap_count_entries(ldp, res) != 1)
-               goto done;
-
-       values = ldap_get_values(ldp, res, "highestCommittedUSN");
-       if (!values || !values[0])
-               goto done;
-
-       *seq = atoi(values[0]);
-       ret = 0;
-
-  done:
-
-       if (values)
-               ldap_value_free(values);
-       if (res)
-               ldap_msgfree(res);
-       if (ldp)
-               ldap_unbind(ldp);
-       return ret;
-}
-
-/**********************************************************************
- Get the sequence number for a Windows AD native mode domain using
- LDAP queries.
-**********************************************************************/
-
-static int get_ldap_sequence_number(struct winbindd_domain *domain, uint32 *seq)
-{
-       int ret = -1;
-       char addr[INET6_ADDRSTRLEN];
-
-       print_sockaddr(addr, sizeof(addr), &domain->dcaddr);
-       if ((ret = get_ldap_seq(addr, LDAP_PORT, seq)) == 0) {
-               DEBUG(3, ("get_ldap_sequence_number: Retrieved sequence "
-                         "number for Domain (%s) from DC (%s)\n",
-                       domain->name, addr));
+       if (num_names > 0) {
+               names = TALLOC_ZERO_ARRAY(mem_ctx, char *, num_names);
+               name_types = TALLOC_ZERO_ARRAY(mem_ctx, uint32_t, num_names);
+               sid_mem = TALLOC_ZERO_ARRAY(mem_ctx, struct dom_sid, num_names);
+               if (names == NULL || name_types == NULL || sid_mem == NULL) {
+                       return NT_STATUS_NO_MEMORY;
+               }
        }
-       return ret;
-}
-
-#endif /* HAVE_LDAP */
 
-/* find the sequence number for a domain */
-static NTSTATUS sequence_number(struct winbindd_domain *domain, uint32 *seq)
-{
-       TALLOC_CTX *mem_ctx;
-       union samr_DomainInfo *info = NULL;
-       NTSTATUS result;
-       struct policy_handle dom_pol;
-       bool got_seq_num = False;
-       struct rpc_pipe_client *cli;
-
-       DEBUG(10,("rpc: fetch sequence_number for %s\n", domain->name));
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("sequence_number: No incoming trust for domain %s\n",
-                         domain->name));
-               *seq = time(NULL);
-               return NT_STATUS_OK;
+       for (j = 0; j < num_names; j++) {
+               sid_compose(&sid_mem[j], domain_sid, rid_mem[j]);
        }
 
-       *seq = DOM_SEQUENCE_NONE;
-
-       if (!(mem_ctx = talloc_init("sequence_number[rpc]")))
-               return NT_STATUS_NO_MEMORY;
+       status = dcerpc_samr_LookupRids(b,
+                                       mem_ctx,
+                                       samr_policy,
+                                       num_names,
+                                       rid_mem,
+                                       &tmp_names,
+                                       &tmp_types,
+                                       &result);
+       if (!NT_STATUS_IS_OK(status)) {
+               return status;
+       }
 
-#ifdef HAVE_LDAP
-       if ( domain->active_directory ) 
-       {
-               int res;
-
-               DEBUG(8,("using get_ldap_seq() to retrieve the "
-                        "sequence number\n"));
-
-               res =  get_ldap_sequence_number( domain, seq );
-               if (res == 0)
-               {                       
-                       result = NT_STATUS_OK;
-                       DEBUG(10,("domain_sequence_number: LDAP for "
-                                 "domain %s is %u\n",
-                                 domain->name, *seq));
-                       goto done;
+       if (!NT_STATUS_IS_OK(result)) {
+               if (!NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED)) {
+                       return result;
                }
+       }
 
-               DEBUG(10,("domain_sequence_number: failed to get LDAP "
-                         "sequence number for domain %s\n",
-                         domain->name ));
+       /* Copy result into array.  The talloc system will take
+          care of freeing the temporary arrays later on. */
+       if (tmp_names.count != tmp_types.count) {
+               return NT_STATUS_UNSUCCESSFUL;
        }
-#endif /* HAVE_LDAP */
 
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result)) {
-               goto done;
+       for (r = 0; r < tmp_names.count; r++) {
+               if (tmp_types.ids[r] == SID_NAME_UNKNOWN) {
+                       continue;
+               }
+               names[total_names] = fill_domain_username_talloc(names,
+                                                                domain_name,
+                                                                tmp_names.names[r].string,
+                                                                true);
+               if (names[total_names] == NULL) {
+                       return NT_STATUS_NO_MEMORY;
+               }
+               name_types[total_names] = tmp_types.ids[r];
+               total_names++;
        }
 
-       /* Query domain info */
+       *pnum_names = total_names;
+       *pnames = names;
+       *pname_types = name_types;
+       *psid_mem = sid_mem;
 
-       result = rpccli_samr_QueryDomainInfo(cli, mem_ctx,
-                                            &dom_pol,
-                                            8,
-                                            &info);
+       return NT_STATUS_OK;
+}
 
-       if (NT_STATUS_IS_OK(result)) {
-               *seq = info->info8.sequence_num;
-               got_seq_num = True;
+/* Find the sequence number for a domain */
+NTSTATUS rpc_sequence_number(TALLOC_CTX *mem_ctx,
+                            struct rpc_pipe_client *samr_pipe,
+                            struct policy_handle *samr_policy,
+                            const char *domain_name,
+                            uint32_t *pseq)
+{
+       union samr_DomainInfo *info = NULL;
+       bool got_seq_num = false;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = samr_pipe->binding_handle;
+
+       /* query domain info */
+       status = dcerpc_samr_QueryDomainInfo(b,
+                                            mem_ctx,
+                                            samr_policy,
+                                            8,
+                                            &info,
+                                            &result);
+       if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
+               *pseq = info->info8.sequence_num;
+               got_seq_num = true;
                goto seq_num;
        }
 
        /* retry with info-level 2 in case the dc does not support info-level 8
         * (like all older samba2 and samba3 dc's) - Guenther */
-
-       result = rpccli_samr_QueryDomainInfo(cli, mem_ctx,
-                                            &dom_pol,
+       status = dcerpc_samr_QueryDomainInfo(b,
+                                            mem_ctx,
+                                            samr_policy,
                                             2,
-                                            &info);
+                                            &info,
+                                            &result);
+       if (NT_STATUS_IS_OK(status) && NT_STATUS_IS_OK(result)) {
+               *pseq = info->general.sequence_num;
+               got_seq_num = true;
+               goto seq_num;
+       }
 
-       if (NT_STATUS_IS_OK(result)) {
-               *seq = info->general.sequence_num;
-               got_seq_num = True;
+       if (!NT_STATUS_IS_OK(status)) {
+               goto seq_num;
        }
 
- seq_num:
+       status = result;
+
+seq_num:
        if (got_seq_num) {
                DEBUG(10,("domain_sequence_number: for domain %s is %u\n",
-                         domain->name, (unsigned)*seq));
+                         domain_name, (unsigned) *pseq));
        } else {
                DEBUG(10,("domain_sequence_number: failed to get sequence "
                          "number (%u) for domain %s\n",
-                         (unsigned)*seq, domain->name ));
+                         (unsigned) *pseq, domain_name ));
+               status = NT_STATUS_OK;
        }
 
-  done:
-
-       talloc_destroy(mem_ctx);
-
-       return result;
+       return status;
 }
 
-/* get a list of trusted domains */
-static NTSTATUS trusted_domains(struct winbindd_domain *domain,
-                               TALLOC_CTX *mem_ctx,
-                               struct netr_DomainTrustList *trusts)
+/* Get a list of trusted domains */
+NTSTATUS rpc_trusted_domains(TALLOC_CTX *mem_ctx,
+                            struct rpc_pipe_client *lsa_pipe,
+                            struct policy_handle *lsa_policy,
+                            uint32_t *pnum_trusts,
+                            struct netr_DomainTrust **ptrusts)
 {
-       NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
-       uint32 enum_ctx = 0;
-       struct rpc_pipe_client *cli;
-       struct policy_handle lsa_policy;
-
-       DEBUG(3,("rpc: trusted_domains\n"));
-
-       ZERO_STRUCTP(trusts);
-
-       result = cm_connect_lsa(domain, mem_ctx, &cli, &lsa_policy);
-       if (!NT_STATUS_IS_OK(result))
-               return result;
+       struct netr_DomainTrust *array = NULL;
+       uint32_t enum_ctx = 0;
+       uint32_t count = 0;
+       NTSTATUS status, result;
+       struct dcerpc_binding_handle *b = lsa_pipe->binding_handle;
 
-       result = STATUS_MORE_ENTRIES;
-
-       while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES)) {
-               uint32 start_idx;
-               int i;
+       do {
                struct lsa_DomainList dom_list;
-
-               result = rpccli_lsa_EnumTrustDom(cli, mem_ctx,
-                                                &lsa_policy,
+               uint32_t start_idx;
+               uint32_t i;
+
+               /*
+                * We don't run into deadlocks here, cause winbind_off() is
+                * called in the main function.
+                */
+               status = dcerpc_lsa_EnumTrustDom(b,
+                                                mem_ctx,
+                                                lsa_policy,
                                                 &enum_ctx,
                                                 &dom_list,
-                                                (uint32_t)-1);
-
-               if (!NT_STATUS_IS_OK(result) &&
-                   !NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES))
-                       break;
+                                                (uint32_t) -1,
+                                                &result);
+               if (!NT_STATUS_IS_OK(status)) {
+                       return status;
+               }
+               if (!NT_STATUS_IS_OK(result)) {
+                       if (!NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES)) {
+                               return result;
+                       }
+               }
 
-               start_idx = trusts->count;
-               trusts->count += dom_list.count;
+               start_idx = count;
+               count += dom_list.count;
 
-               trusts->array = talloc_realloc(
-                       mem_ctx, trusts->array, struct netr_DomainTrust,
-                       trusts->count);
-               if (trusts->array == NULL) {
+               array = talloc_realloc(mem_ctx,
+                                      array,
+                                      struct netr_DomainTrust,
+                                      count);
+               if (array == NULL) {
                        return NT_STATUS_NO_MEMORY;
                }
 
-               for (i=0; i<dom_list.count; i++) {
-                       struct netr_DomainTrust *trust = &trusts->array[i];
+               for (i = 0; i < dom_list.count; i++) {
+                       struct netr_DomainTrust *trust = &array[i];
                        struct dom_sid *sid;
 
                        ZERO_STRUCTP(trust);
 
-                       trust->netbios_name = talloc_move(
-                               trusts->array,
-                               &dom_list.domains[i].name.string);
+                       trust->netbios_name = talloc_move(array,
+                                                         &dom_list.domains[i].name.string);
                        trust->dns_name = NULL;
 
-                       sid = talloc(trusts->array, struct dom_sid);
+                       sid = talloc(array, struct dom_sid);
                        if (sid == NULL) {
                                return NT_STATUS_NO_MEMORY;
                        }
                        sid_copy(sid, dom_list.domains[i].sid);
                        trust->sid = sid;
                }
-       }
-       return result;
-}
-
-/* find the lockout policy for a domain */
-static NTSTATUS msrpc_lockout_policy(struct winbindd_domain *domain,
-                                    TALLOC_CTX *mem_ctx,
-                                    struct samr_DomInfo12 *lockout_policy)
-{
-       NTSTATUS result;
-       struct rpc_pipe_client *cli;
-       struct policy_handle dom_pol;
-       union samr_DomainInfo *info = NULL;
-
-       DEBUG(10,("rpc: fetch lockout policy for %s\n", domain->name));
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("msrpc_lockout_policy: No incoming trust for domain %s\n",
-                         domain->name));
-               return NT_STATUS_NOT_SUPPORTED;
-       }
-
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result)) {
-               goto done;
-       }
-
-       result = rpccli_samr_QueryDomainInfo(cli, mem_ctx,
-                                            &dom_pol,
-                                            12,
-                                            &info);
-       if (!NT_STATUS_IS_OK(result)) {
-               goto done;
-       }
-
-       *lockout_policy = info->info12;
-
-       DEBUG(10,("msrpc_lockout_policy: lockout_threshold %d\n",
-               info->info12.lockout_threshold));
+       } while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
 
-  done:
+       *pnum_trusts = count;
+       *ptrusts = array;
 
-       return result;
+       return NT_STATUS_OK;
 }
 
-/* find the password policy for a domain */
-static NTSTATUS msrpc_password_policy(struct winbindd_domain *domain,
-                                     TALLOC_CTX *mem_ctx,
-                                     struct samr_DomInfo1 *password_policy)
+static NTSTATUS rpc_try_lookup_sids3(TALLOC_CTX *mem_ctx,
+                                    struct winbindd_domain *domain,
+                                    struct lsa_SidArray *sids,
+                                    struct lsa_RefDomainList **pdomains,
+                                    struct lsa_TransNameArray **pnames)
 {
-       NTSTATUS result;
+       struct lsa_TransNameArray2 lsa_names2;
+       struct lsa_TransNameArray *names;
+       uint32_t i, count;
        struct rpc_pipe_client *cli;
-       struct policy_handle dom_pol;
-       union samr_DomainInfo *info = NULL;
-
-       DEBUG(10,("rpc: fetch password policy for %s\n", domain->name));
-
-       if ( !winbindd_can_contact_domain( domain ) ) {
-               DEBUG(10,("msrpc_password_policy: No incoming trust for domain %s\n",
-                         domain->name));
-               return NT_STATUS_NOT_SUPPORTED;
-       }
-
-       result = cm_connect_sam(domain, mem_ctx, &cli, &dom_pol);
-       if (!NT_STATUS_IS_OK(result)) {
-               goto done;
-       }
-
-       result = rpccli_samr_QueryDomainInfo(cli, mem_ctx,
-                                            &dom_pol,
-                                            1,
-                                            &info);
-       if (!NT_STATUS_IS_OK(result)) {
-               goto done;
-       }
-
-       *password_policy = info->info1;
-
-       DEBUG(10,("msrpc_password_policy: min_length_password %d\n",
-               info->info1.min_password_length));
-
-  done:
-
-       return result;
-}
-
-typedef NTSTATUS (*lookup_sids_fn_t)(struct rpc_pipe_client *cli,
-                                    TALLOC_CTX *mem_ctx,
-                                    struct policy_handle *pol,
-                                    int num_sids,
-                                    const DOM_SID *sids,
-                                    char ***pdomains,
-                                    char ***pnames,
-                                    enum lsa_SidType **ptypes);
-
-NTSTATUS winbindd_lookup_sids(TALLOC_CTX *mem_ctx,
-                             struct winbindd_domain *domain,
-                             uint32_t num_sids,
-                             const struct dom_sid *sids,
-                             char ***domains,
-                             char ***names,
-                             enum lsa_SidType **types)
-{
-       NTSTATUS status;
-       struct rpc_pipe_client *cli = NULL;
-       struct policy_handle lsa_policy;
-       unsigned int orig_timeout;
-       lookup_sids_fn_t lookup_sids_fn = rpccli_lsa_lookup_sids;
-
-       if (domain->can_do_ncacn_ip_tcp) {
-               status = cm_connect_lsa_tcp(domain, mem_ctx, &cli);
-               if (NT_STATUS_IS_OK(status)) {
-                       lookup_sids_fn = rpccli_lsa_lookup_sids3;
-                       goto lookup;
-               }
-               domain->can_do_ncacn_ip_tcp = false;
-       }
-       status = cm_connect_lsa(domain, mem_ctx, &cli, &lsa_policy);
+       NTSTATUS status, result;
 
+       status = cm_connect_lsa_tcp(domain, talloc_tos(), &cli);
        if (!NT_STATUS_IS_OK(status)) {
+               domain->can_do_ncacn_ip_tcp = false;
                return status;
        }
 
- lookup:
-       /*
-        * This call can take a long time
-        * allow the server to time out.
-        * 35 seconds should do it.
-        */
-       orig_timeout = rpccli_set_timeout(cli, 35000);
-
-       status = lookup_sids_fn(cli,
-                               mem_ctx,
-                               &lsa_policy,
-                               num_sids,
-                               sids,
-                               domains,
-                               names,
-                               types);
-
-       /* And restore our original timeout. */
-       rpccli_set_timeout(cli, orig_timeout);
-
+       ZERO_STRUCT(lsa_names2);
+       status = dcerpc_lsa_LookupSids3(cli->binding_handle,
+                                       mem_ctx,
+                                       sids,
+                                       pdomains,
+                                       &lsa_names2,
+                                       LSA_LOOKUP_NAMES_ALL,
+                                       &count,
+                                       LSA_LOOKUP_OPTION_SEARCH_ISOLATED_NAMES,
+                                       LSA_CLIENT_REVISION_2,
+                                       &result);
        if (!NT_STATUS_IS_OK(status)) {
                return status;
        }
-
-       return status;
+       if (NT_STATUS_IS_ERR(result)) {
+               return result;
+       }
+       names = talloc_zero(mem_ctx, struct lsa_TransNameArray);
+       if (names == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+       names->count = lsa_names2.count;
+       names->names = talloc_array(names, struct lsa_TranslatedName,
+                                   names->count);
+       if (names->names == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
+       for (i=0; i<names->count; i++) {
+               names->names[i].sid_type = lsa_names2.names[i].sid_type;
+               names->names[i].name.string = talloc_move(
+                       names->names, &lsa_names2.names[i].name.string);
+               names->names[i].sid_index = lsa_names2.names[i].sid_index;
+       }
+       *pnames = names;
+       return result;
 }
 
-typedef NTSTATUS (*lookup_names_fn_t)(struct rpc_pipe_client *cli,
-                                     TALLOC_CTX *mem_ctx,
-                                     struct policy_handle *pol,
-                                     int num_names,
-                                     const char **names,
-                                     const char ***dom_names,
-                                     int level,
-                                     struct dom_sid **sids,
-                                     enum lsa_SidType **types);
-
-NTSTATUS winbindd_lookup_names(TALLOC_CTX *mem_ctx,
-                              struct winbindd_domain *domain,
-                              uint32_t num_names,
-                              const char **names,
-                              const char ***domains,
-                              struct dom_sid **sids,
-                              enum lsa_SidType **types)
+NTSTATUS rpc_lookup_sids(TALLOC_CTX *mem_ctx,
+                        struct winbindd_domain *domain,
+                        struct lsa_SidArray *sids,
+                        struct lsa_RefDomainList **pdomains,
+                        struct lsa_TransNameArray **pnames)
 {
-       NTSTATUS status;
+       struct lsa_TransNameArray *names;
        struct rpc_pipe_client *cli = NULL;
        struct policy_handle lsa_policy;
-       unsigned int orig_timeout = 0;
-       lookup_names_fn_t lookup_names_fn = rpccli_lsa_lookup_names;
+       uint32_t count;
+       NTSTATUS status, result;
 
        if (domain->can_do_ncacn_ip_tcp) {
-               status = cm_connect_lsa_tcp(domain, mem_ctx, &cli);
-               if (NT_STATUS_IS_OK(status)) {
-                       lookup_names_fn = rpccli_lsa_lookup_names4;
-                       goto lookup;
+               status = rpc_try_lookup_sids3(mem_ctx, domain, sids,
+                                             pdomains, pnames);
+               if (!NT_STATUS_IS_ERR(status)) {
+                       return status;
                }
-               domain->can_do_ncacn_ip_tcp = false;
        }
-       status = cm_connect_lsa(domain, mem_ctx, &cli, &lsa_policy);
 
+       status = cm_connect_lsa(domain, mem_ctx, &cli, &lsa_policy);
        if (!NT_STATUS_IS_OK(status)) {
                return status;
        }
 
- lookup:
-
-       /*
-        * This call can take a long time
-        * allow the server to time out.
-        * 35 seconds should do it.
-        * NB
-        * only do this when the undelying transport is named pipe.
-        */
-       if (cli->transport->transport == NCACN_NP) {
-               orig_timeout = rpccli_set_timeout(cli, 35000);
-       }
-
-       status = lookup_names_fn(cli,
-                                mem_ctx,
-                                &lsa_policy,
-                                num_names,
-                                (const char **) names,
-                                domains,
-                                1,
-                                sids,
-                                types);
-
-       /* And restore our original timeout. */
-       if (cli->transport->transport == NCACN_NP) {
-               rpccli_set_timeout(cli, orig_timeout);
+       names = talloc_zero(mem_ctx, struct lsa_TransNameArray);
+       if (names == NULL) {
+               return NT_STATUS_NO_MEMORY;
        }
-
+       status = dcerpc_lsa_LookupSids(cli->binding_handle, mem_ctx,
+                                      &lsa_policy, sids, pdomains,
+                                      names, LSA_LOOKUP_NAMES_ALL,
+                                      &count, &result);
        if (!NT_STATUS_IS_OK(status)) {
                return status;
        }
-
-       return status;
+       if (NT_STATUS_IS_ERR(result)) {
+               return result;
+       }
+       *pnames = names;
+       return result;
 }
-
-/* the rpc backend methods are exposed via this structure */
-struct winbindd_methods msrpc_methods = {
-       False,
-       query_user_list,
-       enum_dom_groups,
-       enum_local_groups,
-       msrpc_name_to_sid,
-       msrpc_sid_to_name,
-       msrpc_rids_to_names,
-       query_user,
-       lookup_usergroups,
-       msrpc_lookup_useraliases,
-       lookup_groupmem,
-       sequence_number,
-       msrpc_lockout_policy,
-       msrpc_password_policy,
-       trusted_domains,
-};