r10656: BIG merge from trunk. Features not copied over
[ira/wip.git] / source3 / passdb / pdb_ldap.c
index a0853e21021fda5913a9e5892da14ae4ce67606c..e44ccc3bf98ca3bcae474b75b376c53af08787ab 100644 (file)
@@ -2,10 +2,10 @@
    Unix SMB/CIFS implementation.
    LDAP protocol helper functions for SAMBA
    Copyright (C) Jean François Micouleau       1998
-   Copyright (C) Gerald Carter                 2001
+   Copyright (C) Gerald Carter                 2001-2003
    Copyright (C) Shahms King                   2001
-   Copyright (C) Andrew Bartlett               2002
-   Copyright (C) Stefan (metze) Metzmacher     2002
+   Copyright (C) Andrew Bartlett               2002-2003
+   Copyright (C) Stefan (metze) Metzmacher     2002-2003
     
    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
    
 */
 
-#include "includes.h"
-
-#undef DBGC_CLASS
-#define DBGC_CLASS DBGC_PASSDB
-
 /* TODO:
 *  persistent connections: if using NSS LDAP, many connections are made
 *      however, using only one within Samba would be nice
 *  and/or winbind
 */
 
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_PASSDB
+
 #include <lber.h>
 #include <ldap.h>
 
-#ifndef SAM_ACCOUNT
-#define SAM_ACCOUNT struct sam_passwd
+/*
+ * Work around versions of the LDAP client libs that don't have the OIDs
+ * defined, or have them defined under the old name.  
+ * This functionality is really a factor of the server, not the client 
+ *
+ */
+
+#if defined(LDAP_EXOP_X_MODIFY_PASSWD) && !defined(LDAP_EXOP_MODIFY_PASSWD)
+#define LDAP_EXOP_MODIFY_PASSWD LDAP_EXOP_X_MODIFY_PASSWD
+#elif !defined(LDAP_EXOP_MODIFY_PASSWD)
+#define LDAP_EXOP_MODIFY_PASSWD "1.3.6.1.4.1.4203.1.11.1"
 #endif
 
-struct ldapsam_privates {
-
-       /* Former statics */
-       LDAP *ldap_struct;
-       LDAPMessage *result;
-       LDAPMessage *entry;
-       int index;
-       
-       time_t last_ping;
-       /* retrive-once info */
-       const char *uri;
-       
-       BOOL permit_non_unix_accounts;
-       
-       uint32 low_nua_rid; 
-       uint32 high_nua_rid; 
+#if defined(LDAP_EXOP_X_MODIFY_PASSWD_ID) && !defined(LDAP_EXOP_MODIFY_PASSWD_ID)
+#define LDAP_TAG_EXOP_MODIFY_PASSWD_ID LDAP_EXOP_X_MODIFY_PASSWD_ID
+#elif !defined(LDAP_EXOP_MODIFY_PASSWD_ID)
+#define LDAP_TAG_EXOP_MODIFY_PASSWD_ID        ((ber_tag_t) 0x80U)
+#endif
 
-       char *bind_dn;
-       char *bind_secret;
-};
+#if defined(LDAP_EXOP_X_MODIFY_PASSWD_NEW) && !defined(LDAP_EXOP_MODIFY_PASSWD_NEW)
+#define LDAP_TAG_EXOP_MODIFY_PASSWD_NEW LDAP_EXOP_X_MODIFY_PASSWD_NEW
+#elif !defined(LDAP_EXOP_MODIFY_PASSWD_NEW)
+#define LDAP_TAG_EXOP_MODIFY_PASSWD_NEW       ((ber_tag_t) 0x82U)
+#endif
 
-#define LDAPSAM_DONT_PING_TIME 10      /* ping only all 10 seconds */
 
-static struct ldapsam_privates *static_ldap_state;
+#ifndef SAM_ACCOUNT
+#define SAM_ACCOUNT struct sam_passwd
+#endif
 
-static uint32 ldapsam_get_next_available_nua_rid(struct ldapsam_privates *ldap_state);
+#include "smbldap.h"
 
-/*******************************************************************
- find the ldap password
-******************************************************************/
-static BOOL fetch_ldapsam_pw(char **dn, char** pw)
+/**********************************************************************
+ Free a LDAPMessage (one is stored on the SAM_ACCOUNT).
+ **********************************************************************/
+void private_data_free_fn(void **result) 
 {
-       char *key = NULL;
-       size_t size;
-       
-       *dn = smb_xstrdup(lp_ldap_admin_dn());
-       
-       if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, *dn) < 0) {
-               SAFE_FREE(*dn);
-               DEBUG(0, ("fetch_ldapsam_pw: asprintf failed!\n"));
-       }
-       
-       *pw=secrets_fetch(key, &size);
-       if (!size) {
-               /* Upgrade 2.2 style entry */
-               char *p;
-               char* old_style_key = strdup(*dn);
-               char *data;
-               fstring old_style_pw;
-               
-               if (!old_style_key) {
-                       DEBUG(0, ("fetch_ldapsam_pw: strdup failed!\n"));
-                       return False;
-               }
-
-               for (p=old_style_key; *p; p++)
-                       if (*p == ',') *p = '/';
-       
-               data=secrets_fetch(old_style_key, &size);
-               if (!size && size < sizeof(old_style_pw)) {
-                       DEBUG(0,("fetch_ldap_pw: neither ldap secret retrieved!\n"));
-                       SAFE_FREE(old_style_key);
-                       SAFE_FREE(*dn);
-                       return False;
-               }
-
-               strncpy(old_style_pw, data, size);
-               old_style_pw[size] = 0;
-
-               SAFE_FREE(data);
-
-               if (!secrets_store_ldap_pw(*dn, old_style_pw)) {
-                       DEBUG(0,("fetch_ldap_pw: ldap secret could not be upgraded!\n"));
-                       SAFE_FREE(old_style_key);
-                       SAFE_FREE(*dn);
-                       return False;                   
-               }
-               if (!secrets_delete(old_style_key)) {
-                       DEBUG(0,("fetch_ldap_pw: old ldap secret could not be deleted!\n"));
-               }
-
-               SAFE_FREE(old_style_key);
-
-               *pw = smb_xstrdup(old_style_pw);                
-       }
-       
-       return True;
+       ldap_msgfree(*result);
+       *result = NULL;
 }
 
-static const char *attr[] = {"uid", "pwdLastSet", "logonTime",
-                            "logoffTime", "kickoffTime", "cn",
-                            "pwdCanChange", "pwdMustChange",
-                            "displayName", "homeDrive",
-                            "smbHome", "scriptPath",
-                            "profilePath", "description",
-                            "userWorkstations", "rid",
-                            "primaryGroupID", "lmPassword",
-                            "ntPassword", "acctFlags",
-                            "domain", "objectClass", 
-                            "uidNumber", "gidNumber", 
-                            "homeDirectory", NULL };
-
-/*******************************************************************
- open a connection to the ldap server.
-******************************************************************/
-static int ldapsam_open_connection (struct ldapsam_privates *ldap_state, LDAP ** ldap_struct)
+/**********************************************************************
+ Get the attribute name given a user schame version.
+ **********************************************************************/
+static const char* get_userattr_key2string( int schema_ver, int key )
 {
-       int rc = LDAP_SUCCESS;
-       int version;
-       BOOL ldap_v3 = False;
-
-#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
-       DEBUG(10, ("ldapsam_open_connection: %s\n", ldap_state->uri));
-       
-       if ((rc = ldap_initialize(ldap_struct, ldap_state->uri)) != LDAP_SUCCESS) {
-               DEBUG(0, ("ldap_initialize: %s\n", ldap_err2string(rc)));
-               return rc;
-       }
-       
-#else 
-
-       /* Parse the string manually */
-
-       {
-               int port = 0;
-               fstring protocol;
-               fstring host;
-               const char *p = ldap_state->uri; 
-               SMB_ASSERT(sizeof(protocol)>10 && sizeof(host)>254);
-               
-               /* skip leading "URL:" (if any) */
-               if ( strncasecmp( p, "URL:", 4 ) == 0 ) {
-                       p += 4;
-               }
-               
-               sscanf(p, "%10[^:]://%254s[^:]:%d", protocol, host, &port);
-               
-               if (port == 0) {
-                       if (strequal(protocol, "ldap")) {
-                               port = LDAP_PORT;
-                       } else if (strequal(protocol, "ldaps")) {
-                               port = LDAPS_PORT;
-                       } else {
-                               DEBUG(0, ("unrecognised protocol (%s)!\n", protocol));
-                       }
-               }
-               
-               if ((*ldap_struct = ldap_init(host, port)) == NULL)     {
-                       DEBUG(0, ("ldap_init failed !\n"));
-                       return LDAP_OPERATIONS_ERROR;
-               }
-               
-               if (strequal(protocol, "ldaps")) {
-#ifdef LDAP_OPT_X_TLS
-                       int tls = LDAP_OPT_X_TLS_HARD;
-                       if (ldap_set_option (*ldap_struct, LDAP_OPT_X_TLS, &tls) != LDAP_SUCCESS)
-                       {
-                               DEBUG(0, ("Failed to setup a TLS session\n"));
-                       }
+       switch ( schema_ver ) {
+               case SCHEMAVER_SAMBAACCOUNT:
+                       return get_attr_key2string( attrib_map_v22, key );
                        
-                       DEBUG(3,("LDAPS option set...!\n"));
-#else
-                       DEBUG(0,("ldapsam_open_connection: Secure connection not supported by LDAP client libraries!\n"));
-                       return LDAP_OPERATIONS_ERROR;
-#endif
-               }
+               case SCHEMAVER_SAMBASAMACCOUNT:
+                       return get_attr_key2string( attrib_map_v30, key );
+                       
+               default:
+                       DEBUG(0,("get_userattr_key2string: unknown schema version specified\n"));
+                       break;
        }
-#endif
+       return NULL;
+}
 
-       if (ldap_get_option(*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS)
-       {
-               if (version != LDAP_VERSION3)
-               {
-                       version = LDAP_VERSION3;
-                       if (ldap_set_option (*ldap_struct, LDAP_OPT_PROTOCOL_VERSION, &version) == LDAP_OPT_SUCCESS) {
-                               ldap_v3 = True;
-                       }
-               } else {
-                       ldap_v3 = True;
-               }
-       }
+/**********************************************************************
+ Return the list of attribute names given a user schema version.
+**********************************************************************/
 
-       if (lp_ldap_ssl() == LDAP_SSL_START_TLS) {
-#ifdef LDAP_OPT_X_TLS
-               if (ldap_v3) {
-                       if ((rc = ldap_start_tls_s (*ldap_struct, NULL, NULL)) != LDAP_SUCCESS)
-                       {
-                               DEBUG(0,("Failed to issue the StartTLS instruction: %s\n",
-                                        ldap_err2string(rc)));
-                               return rc;
-                       }
-                       DEBUG (3, ("StartTLS issued: using a TLS connection\n"));
-               } else {
+const char** get_userattr_list( int schema_ver )
+{
+       switch ( schema_ver ) {
+               case SCHEMAVER_SAMBAACCOUNT:
+                       return get_attr_list( attrib_map_v22 );
                        
-                       DEBUG(0, ("Need LDAPv3 for Start TLS\n"));
-                       return LDAP_OPERATIONS_ERROR;
-               }
-#else
-               DEBUG(0,("ldapsam_open_connection: StartTLS not supported by LDAP client libraries!\n"));
-               return LDAP_OPERATIONS_ERROR;
-#endif
+               case SCHEMAVER_SAMBASAMACCOUNT:
+                       return get_attr_list( attrib_map_v30 );
+               default:
+                       DEBUG(0,("get_userattr_list: unknown schema version specified!\n"));
+                       break;
        }
-
-       DEBUG(2, ("ldapsam_open_connection: connection opened\n"));
-       return rc;
+       
+       return NULL;
 }
 
+/**************************************************************************
+ Return the list of attribute names to delete given a user schema version.
+**************************************************************************/
 
-/*******************************************************************
- a rebind function for authenticated referrals
- This version takes a void* that we can shove useful stuff in :-)
-******************************************************************/
-#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
-#else
-static int rebindproc_with_state  (LDAP * ld, char **whop, char **credp, 
-                                  int *methodp, int freeit, void *arg)
+static const char** get_userattr_delete_list( int schema_ver )
 {
-       struct ldapsam_privates *ldap_state = arg;
-       
-       /** @TODO Should we be doing something to check what servers we rebind to?
-           Could we get a referral to a machine that we don't want to give our
-           username and password to? */
-       
-       if (freeit) {
-               SAFE_FREE(*whop);
-               memset(*credp, '\0', strlen(*credp));
-               SAFE_FREE(*credp);
-       } else {
-               DEBUG(5,("rebind_proc_with_state: Rebinding as \"%s\"\n", 
-                         ldap_state->bind_dn));
-
-               *whop = strdup(ldap_state->bind_dn);
-               if (!*whop) {
-                       return LDAP_NO_MEMORY;
-               }
-               *credp = strdup(ldap_state->bind_secret);
-               if (!*credp) {
-                       SAFE_FREE(*whop);
-                       return LDAP_NO_MEMORY;
-               }
-               *methodp = LDAP_AUTH_SIMPLE;
+       switch ( schema_ver ) {
+               case SCHEMAVER_SAMBAACCOUNT:
+                       return get_attr_list( attrib_map_to_delete_v22 );
+                       
+               case SCHEMAVER_SAMBASAMACCOUNT:
+                       return get_attr_list( attrib_map_to_delete_v30 );
+               default:
+                       DEBUG(0,("get_userattr_delete_list: unknown schema version specified!\n"));
+                       break;
        }
-       return 0;
+       
+       return NULL;
 }
-#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
+
 
 /*******************************************************************
- a rebind function for authenticated referrals
- This version takes a void* that we can shove useful stuff in :-)
- and actually does the connection.
+ Generate the LDAP search filter for the objectclass based on the 
+ version of the schema we are using.
 ******************************************************************/
-#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
-static int rebindproc_connect_with_state (LDAP *ldap_struct, 
-                                         LDAP_CONST char *url, 
-                                         ber_tag_t request,
-                                         ber_int_t msgid, void *arg)
-{
-       struct ldapsam_privates *ldap_state = arg;
-       int rc;
-       DEBUG(5,("rebindproc_connect_with_state: Rebinding as \"%s\"\n", 
-                ldap_state->bind_dn));
-       
-       /** @TODO Should we be doing something to check what servers we rebind to?
-           Could we get a referral to a machine that we don't want to give our
-           username and password to? */
 
-       rc = ldap_simple_bind_s(ldap_struct, ldap_state->bind_dn, ldap_state->bind_secret);
+static const char* get_objclass_filter( int schema_ver )
+{
+       static fstring objclass_filter;
        
-       return rc;
-}
-#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
-
-/*******************************************************************
- Add a rebind function for authenticated referrals
-******************************************************************/
-#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
-#else
-# if LDAP_SET_REBIND_PROC_ARGS == 2
-static int rebindproc (LDAP *ldap_struct, char **whop, char **credp,
-                      int *method, int freeit )
-{
-       return rebindproc_with_state(ldap_struct, whop, credp,
-                                  method, freeit, static_ldap_state);
+       switch( schema_ver ) {
+               case SCHEMAVER_SAMBAACCOUNT:
+                       fstr_sprintf( objclass_filter, "(objectclass=%s)", LDAP_OBJ_SAMBAACCOUNT );
+                       break;
+               case SCHEMAVER_SAMBASAMACCOUNT:
+                       fstr_sprintf( objclass_filter, "(objectclass=%s)", LDAP_OBJ_SAMBASAMACCOUNT );
+                       break;
+               default:
+                       DEBUG(0,("get_objclass_filter: Invalid schema version specified!\n"));
+                       break;
+       }
        
+       return objclass_filter; 
 }
-# endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
-#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 
-/*******************************************************************
- a rebind function for authenticated referrals
- this also does the connection, but no void*.
+/*****************************************************************
+ Scan a sequence number off OpenLDAP's syncrepl contextCSN
 ******************************************************************/
-#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
-# if LDAP_SET_REBIND_PROC_ARGS == 2
-static int rebindproc_connect (LDAP * ld, LDAP_CONST char *url, int request,
-                              ber_int_t msgid)
-{
-       return rebindproc_connect_with_state(ld, url, (ber_tag_t)request, msgid, 
-                                            static_ldap_state);
-}
-# endif /*LDAP_SET_REBIND_PROC_ARGS == 2*/
-#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
 
-/*******************************************************************
- connect to the ldap server under system privilege.
-******************************************************************/
-static int ldapsam_connect_system(struct ldapsam_privates *ldap_state, LDAP * ldap_struct)
+static NTSTATUS ldapsam_get_seq_num(struct pdb_methods *my_methods, time_t *seq_num)
 {
-       int rc;
-       char *ldap_dn;
-       char *ldap_secret;
-
-       /* The rebind proc needs this *HACK*.  We are not multithreaded, so
-          this will work, but it's not nice. */
-       static_ldap_state = ldap_state;
-
-       /* get the password */
-       if (!fetch_ldapsam_pw(&ldap_dn, &ldap_secret))
-       {
-               DEBUG(0, ("ldap_connect_system: Failed to retrieve password from secrets.tdb\n"));
-               return LDAP_INVALID_CREDENTIALS;
-       }
-
-       ldap_state->bind_dn = ldap_dn;
-       ldap_state->bind_secret = ldap_secret;
-
-       /* removed the sasl_bind_s "EXTERNAL" stuff, as my testsuite 
-          (OpenLDAP) doesnt' seem to support it */
-          
-       DEBUG(10,("ldap_connect_system: Binding to ldap server %s as \"%s\"\n",
-                 ldap_state->uri, ldap_dn));
-
-#if defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)
-# if LDAP_SET_REBIND_PROC_ARGS == 2    
-       ldap_set_rebind_proc(ldap_struct, &rebindproc_connect); 
-# endif
-# if LDAP_SET_REBIND_PROC_ARGS == 3    
-       ldap_set_rebind_proc(ldap_struct, &rebindproc_connect_with_state, (void *)ldap_state);  
-# endif
-#else /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
-# if LDAP_SET_REBIND_PROC_ARGS == 2    
-       ldap_set_rebind_proc(ldap_struct, &rebindproc); 
-# endif
-# if LDAP_SET_REBIND_PROC_ARGS == 3    
-       ldap_set_rebind_proc(ldap_struct, &rebindproc_with_state, (void *)ldap_state);  
-# endif
-#endif /*defined(LDAP_API_FEATURE_X_OPENLDAP) && (LDAP_API_VERSION > 2000)*/
-
-       rc = ldap_simple_bind_s(ldap_struct, ldap_dn, ldap_secret);
+       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
+       NTSTATUS ntstatus = NT_STATUS_UNSUCCESSFUL;
+       LDAPMessage *msg = NULL;
+       LDAPMessage *entry = NULL;
+       TALLOC_CTX *mem_ctx;
+       char **values = NULL;
+       int rc, num_result, num_values, rid;
+       pstring suffix;
+       fstring tok;
+       const char *p;
+       const char **attrs;
+
+       /* Unfortunatly there is no proper way to detect syncrepl-support in
+        * smbldap_connect_system(). The syncrepl OIDs are submitted for publication
+        * but do not show up in the root-DSE yet. Neither we can query the
+        * subschema-context for the syncProviderSubentry or syncConsumerSubentry
+        * objectclass. Currently we require lp_ldap_suffix() to show up as
+        * namingContext.  -  Guenther
+        */
 
-       if (rc != LDAP_SUCCESS) {
-               char *ld_error = NULL;
-               ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
-                               &ld_error);
-               DEBUG(0,
-                     ("failed to bind to server with dn= %s Error: %s\n\t%s\n",
-                              ldap_dn ? ld_error : "(unknown)", ldap_err2string(rc),
-                              ld_error));
-               SAFE_FREE(ld_error);
-               return rc;
+       if (!lp_parm_bool(-1, "ldapsam", "syncrepl_seqnum", False)) {
+               return ntstatus;
        }
-       
-       DEBUG(2, ("ldap_connect_system: succesful connection to the LDAP server\n"));
-       return rc;
-}
 
-/**********************************************************************
-Connect to LDAP server 
-*********************************************************************/
-static int ldapsam_open(struct ldapsam_privates *ldap_state)
-{
-       int rc;
-       SMB_ASSERT(ldap_state);
-               
-#ifndef NO_LDAP_SECURITY
-       if (geteuid() != 0) {
-               DEBUG(0, ("ldapsam_open: cannot access LDAP when not root..\n"));
-               return  LDAP_INSUFFICIENT_ACCESS;
+       if (!seq_num) {
+               DEBUG(3,("ldapsam_get_seq_num: no sequence_number\n"));
+               return ntstatus;
        }
-#endif
 
-       if ((ldap_state->ldap_struct != NULL) && ((ldap_state->last_ping + LDAPSAM_DONT_PING_TIME) < time(NULL))) {
-               struct sockaddr_un addr;
-               socklen_t len;
-               int sd;
-               if (ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_DESC, &sd) == 0 &&
-                   getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
-                       /* the other end has died. reopen. */
-                       ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
-                       ldap_state->ldap_struct = NULL;
-                       ldap_state->last_ping = (time_t)0;
-               } else {
-                       ldap_state->last_ping = time(NULL);
-               } 
-       }
-
-       if (ldap_state->ldap_struct != NULL) {
-               DEBUG(5,("ldapsam_open: allready connected to the LDAP server\n"));
-               return LDAP_SUCCESS;
+       if (!smbldap_has_naming_context(ldap_state->smbldap_state, lp_ldap_suffix())) {
+               DEBUG(3,("ldapsam_get_seq_num: DIT not configured to hold %s "
+                        "as top-level namingContext\n", lp_ldap_suffix()));
+               return ntstatus;
        }
 
-       if ((rc = ldapsam_open_connection(ldap_state, &ldap_state->ldap_struct))) {
-               return rc;
-       }
+       mem_ctx = talloc_init("ldapsam_get_seq_num");
 
-       if ((rc = ldapsam_connect_system(ldap_state, ldap_state->ldap_struct))) {
-               ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
-               ldap_state->ldap_struct = NULL;
-               return rc;
-       }
+       if (mem_ctx == NULL)
+               return NT_STATUS_NO_MEMORY;
 
+       attrs = TALLOC_ARRAY(mem_ctx, const char *, 2);
 
-       ldap_state->last_ping = time(NULL);
-       DEBUG(4,("The LDAP server is succesful connected\n"));
+       /* if we got a syncrepl-rid (up to three digits long) we speak with a consumer */
+       rid = lp_parm_int(-1, "ldapsam", "syncrepl_rid", -1);
+       if (rid > 0) {
 
-       return LDAP_SUCCESS;
-}
+               /* consumer syncreplCookie: */
+               /* csn=20050126161620Z#0000001#00#00000 */
+               attrs[0] = talloc_strdup(mem_ctx, "syncreplCookie");
+               attrs[1] = NULL;
+               pstr_sprintf( suffix, "cn=syncrepl%d,%s", rid, lp_ldap_suffix());
 
-/**********************************************************************
-Disconnect from LDAP server 
-*********************************************************************/
-static NTSTATUS ldapsam_close(struct ldapsam_privates *ldap_state)
-{
-       if (!ldap_state)
-               return NT_STATUS_INVALID_PARAMETER;
-               
-       if (ldap_state->ldap_struct != NULL) {
-               ldap_unbind_ext(ldap_state->ldap_struct, NULL, NULL);
-               ldap_state->ldap_struct = NULL;
-       }
-       
-       DEBUG(5,("The connection to the LDAP server was closed\n"));
-       /* maybe free the results here --metze */
-       
-       return NT_STATUS_OK;
-}
+       } else {
 
-static int ldapsam_retry_open(struct ldapsam_privates *ldap_state, int *attempts)
-{
-       int rc;
+               /* provider contextCSN */
+               /* 20050126161620Z#000009#00#000000 */
+               attrs[0] = talloc_strdup(mem_ctx, "contextCSN");
+               attrs[1] = NULL;
+               pstr_sprintf( suffix, "cn=ldapsync,%s", lp_ldap_suffix());
 
-       SMB_ASSERT(ldap_state && attempts);
-               
-       if (*attempts != 0) {
-               /* we retry after 0.5, 2, 4.5, 8, 12.5, 18, 24.5 seconds */
-               msleep((((*attempts)*(*attempts))/2)*1000);
        }
-       (*attempts)++;
 
-       if ((rc = ldapsam_open(ldap_state))) {
-               DEBUG(0,("Connection to LDAP Server failed for the %d try!\n",*attempts));
-               return rc;
-       } 
-       
-       return LDAP_SUCCESS;            
-}
+       rc = smbldap_search(ldap_state->smbldap_state, suffix,
+                           LDAP_SCOPE_BASE, "(objectclass=*)", attrs, 0, &msg);
 
+       if (rc != LDAP_SUCCESS) {
 
-static int ldapsam_search(struct ldapsam_privates *ldap_state, 
-                         const char *base, int scope, const char *filter, 
-                         const char *attrs[], int attrsonly, 
-                         LDAPMessage **res)
-{
-       int             rc = LDAP_SERVER_DOWN;
-       int             attempts = 0;
-       
-       SMB_ASSERT(ldap_state);
-
-       while ((rc == LDAP_SERVER_DOWN) && (attempts < 8)) {
-               
-               if ((rc = ldapsam_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
-                       continue;
-               
-               rc = ldap_search_s(ldap_state->ldap_struct, base, scope, 
-                                  filter, attrs, attrsonly, res);
-       }
-       
-       if (rc == LDAP_SERVER_DOWN) {
-               DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
-               ldapsam_close(ldap_state);      
+               char *ld_error = NULL;
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct,
+                               LDAP_OPT_ERROR_STRING, &ld_error);
+               DEBUG(0,("ldapsam_get_seq_num: Failed search for suffix: %s, error: %s (%s)\n", 
+                       suffix,ldap_err2string(rc), ld_error?ld_error:"unknown"));
+               SAFE_FREE(ld_error);
+               goto done;
        }
-       
-       return rc;
-}
 
-static int ldapsam_modify(struct ldapsam_privates *ldap_state, char *dn, LDAPMod *attrs[])
-{
-       int             rc = LDAP_SERVER_DOWN;
-       int             attempts = 0;
-       
-       if (!ldap_state)
-               return (-1);
-
-       while ((rc == LDAP_SERVER_DOWN) && (attempts < 8)) {
-               
-               if ((rc = ldapsam_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
-                       continue;
-               
-               rc = ldap_modify_s(ldap_state->ldap_struct, dn, attrs);
+       num_result = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, msg);
+       if (num_result != 1) {
+               DEBUG(3,("ldapsam_get_seq_num: Expected one entry, got %d\n", num_result));
+               goto done;
        }
-       
-       if (rc == LDAP_SERVER_DOWN) {
-               DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
-               ldapsam_close(ldap_state);      
+
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, msg);
+       if (entry == NULL) {
+               DEBUG(3,("ldapsam_get_seq_num: Could not retrieve entry\n"));
+               goto done;
        }
-       
-       return rc;
-}
 
-static int ldapsam_add(struct ldapsam_privates *ldap_state, const char *dn, LDAPMod *attrs[])
-{
-       int             rc = LDAP_SERVER_DOWN;
-       int             attempts = 0;
-       
-       if (!ldap_state)
-               return (-1);
+       values = ldap_get_values(ldap_state->smbldap_state->ldap_struct, entry, attrs[0]);
+       if (values == NULL) {
+               DEBUG(3,("ldapsam_get_seq_num: no values\n"));
+               goto done;
+       }
 
-       while ((rc == LDAP_SERVER_DOWN) && (attempts < 8)) {
-               
-               if ((rc = ldapsam_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
-                       continue;
-               
-               rc = ldap_add_s(ldap_state->ldap_struct, dn, attrs);
+       num_values = ldap_count_values(values);
+       if (num_values == 0) {
+               DEBUG(3,("ldapsam_get_seq_num: not a single value\n"));
+               goto done;
        }
-       
-       if (rc == LDAP_SERVER_DOWN) {
-               DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
-               ldapsam_close(ldap_state);      
+
+       p = values[0];
+       if (!next_token(&p, tok, "#", sizeof(tok))) {
+               DEBUG(0,("ldapsam_get_seq_num: failed to parse sequence number\n"));
+               goto done;
        }
-               
-       return rc;
-}
 
-static int ldapsam_delete(struct ldapsam_privates *ldap_state, char *dn)
-{
-       int             rc = LDAP_SERVER_DOWN;
-       int             attempts = 0;
-       
-       if (!ldap_state)
-               return (-1);
+       p = tok;
+       if (!strncmp(p, "csn=", strlen("csn=")))
+               p += strlen("csn=");
 
-       while ((rc == LDAP_SERVER_DOWN) && (attempts < 8)) {
-               
-               if ((rc = ldapsam_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
-                       continue;
-               
-               rc = ldap_delete_s(ldap_state->ldap_struct, dn);
-       }
-       
-       if (rc == LDAP_SERVER_DOWN) {
-               DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
-               ldapsam_close(ldap_state);      
-       }
-               
-       return rc;
-}
+       DEBUG(10,("ldapsam_get_seq_num: got %s: %s\n", attrs[0], p));
 
-static int ldapsam_extended_operation(struct ldapsam_privates *ldap_state, LDAP_CONST char *reqoid, struct berval *reqdata, LDAPControl **serverctrls, LDAPControl **clientctrls, char **retoidp, struct berval **retdatap)
-{
-       int             rc = LDAP_SERVER_DOWN;
-       int             attempts = 0;
-       
-       if (!ldap_state)
-               return (-1);
+       *seq_num = generalized_to_unix_time(p);
 
-       while ((rc == LDAP_SERVER_DOWN) && (attempts < 8)) {
-               
-               if ((rc = ldapsam_retry_open(ldap_state,&attempts)) != LDAP_SUCCESS)
-                       continue;
-               
-               rc = ldap_extended_operation_s(ldap_state->ldap_struct, reqoid, reqdata, serverctrls, clientctrls, retoidp, retdatap);
-       }
-       
-       if (rc == LDAP_SERVER_DOWN) {
-               DEBUG(0,("%s: LDAP server is down!\n",FUNCTION_MACRO));
-               ldapsam_close(ldap_state);      
+       /* very basic sanity check */
+       if (*seq_num <= 0) {
+               DEBUG(3,("ldapsam_get_seq_num: invalid sequence number: %d\n", 
+                       (int)*seq_num));
+               goto done;
        }
-               
-       return rc;
-}
-
-/*******************************************************************
- run the search by name.
-******************************************************************/
-static int ldapsam_search_one_user (struct ldapsam_privates *ldap_state, const char *filter, LDAPMessage ** result)
-{
-       int scope = LDAP_SCOPE_SUBTREE;
-       int rc;
 
-       DEBUG(2, ("ldapsam_search_one_user: searching for:[%s]\n", filter));
+       ntstatus = NT_STATUS_OK;
 
-       rc = ldapsam_search(ldap_state, lp_ldap_suffix (), scope, filter, attr, 0, result);
+ done:
+       if (values != NULL)
+               ldap_value_free(values);
+       if (msg != NULL)
+               ldap_msgfree(msg);
+       if (mem_ctx)
+               talloc_destroy(mem_ctx);
 
-       if (rc != LDAP_SUCCESS) {
-               char *ld_error = NULL;
-               ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
-                               &ld_error);
-               DEBUG(0,("ldapsam_search_one_user: Problem during the LDAP search: %s (%s)\n", 
-                       ld_error?ld_error:"(unknown)", ldap_err2string (rc)));
-               DEBUG(3,("ldapsam_search_one_user: Query was: %s, %s\n", lp_ldap_suffix(), 
-                       filter));
-               SAFE_FREE(ld_error);
-       }
-       
-       return rc;
+       return ntstatus;
 }
 
 /*******************************************************************
run the search by name.
Run the search by name.
 ******************************************************************/
-static int ldapsam_search_one_user_by_name (struct ldapsam_privates *ldap_state, const char *user,
-                            LDAPMessage ** result)
+
+int ldapsam_search_suffix_by_name(struct ldapsam_privates *ldap_state, 
+                                         const char *user,
+                                         LDAPMessage ** result,
+                                         const char **attr)
 {
        pstring filter;
        char *escape_user = escape_ldap_string_alloc(user);
@@ -679,7 +338,8 @@ static int ldapsam_search_one_user_by_name (struct ldapsam_privates *ldap_state,
         * in the filter expression, replace %u with the real name
         * so in ldap filter, %u MUST exist :-)
         */
-       pstrcpy(filter, lp_ldap_filter());
+       pstr_sprintf(filter, "(&%s%s)", "(uid=%u)", 
+               get_objclass_filter(ldap_state->schema_ver));
 
        /* 
         * have to use this here because $ is filtered out
@@ -690,310 +350,224 @@ static int ldapsam_search_one_user_by_name (struct ldapsam_privates *ldap_state,
        all_string_sub(filter, "%u", escape_user, sizeof(pstring));
        SAFE_FREE(escape_user);
 
-       return ldapsam_search_one_user(ldap_state, filter, result);
+       return smbldap_search_suffix(ldap_state->smbldap_state, filter, attr, result);
 }
 
 /*******************************************************************
run the search by uid.
Run the search by rid.
 ******************************************************************/
-static int ldapsam_search_one_user_by_uid(struct ldapsam_privates *ldap_state, 
-                                         int uid,
-                                         LDAPMessage ** result)
+
+static int ldapsam_search_suffix_by_rid (struct ldapsam_privates *ldap_state, 
+                                        uint32 rid, LDAPMessage ** result, 
+                                        const char **attr)
 {
-       struct passwd *user;
        pstring filter;
-       char *escape_user;
+       int rc;
 
-       /* Get the username from the system and look that up in the LDAP */
+       pstr_sprintf(filter, "(&(rid=%i)%s)", rid, 
+               get_objclass_filter(ldap_state->schema_ver));
        
-       if ((user = getpwuid_alloc(uid)) == NULL) {
-               DEBUG(3,("ldapsam_search_one_user_by_uid: Failed to locate uid [%d]\n", uid));
-               return LDAP_NO_SUCH_OBJECT;
-       }
-       
-       pstrcpy(filter, lp_ldap_filter());
+       rc = smbldap_search_suffix(ldap_state->smbldap_state, filter, attr, result);
        
-       escape_user = escape_ldap_string_alloc(user->pw_name);
-       if (!escape_user) {
-               passwd_free(&user);
-               return LDAP_NO_MEMORY;
-       }
-
-       all_string_sub(filter, "%u", escape_user, sizeof(pstring));
-
-       passwd_free(&user);
-       SAFE_FREE(escape_user);
-
-       return ldapsam_search_one_user(ldap_state, filter, result);
+       return rc;
 }
 
 /*******************************************************************
run the search by rid.
Run the search by SID.
 ******************************************************************/
-static int ldapsam_search_one_user_by_rid (struct ldapsam_privates *ldap_state, 
-                                          uint32 rid,
-                                          LDAPMessage ** result)
+
+static int ldapsam_search_suffix_by_sid (struct ldapsam_privates *ldap_state, 
+                                        const DOM_SID *sid, LDAPMessage ** result, 
+                                        const char **attr)
 {
        pstring filter;
        int rc;
+       fstring sid_string;
 
-       /* check if the user rid exsists, if not, try searching on the uid */
-       
-       snprintf(filter, sizeof(filter) - 1, "rid=%i", rid);
-       rc = ldapsam_search_one_user(ldap_state, filter, result);
-       
-       if (rc != LDAP_SUCCESS)
-               rc = ldapsam_search_one_user_by_uid(ldap_state,
-                                                   fallback_pdb_user_rid_to_uid(rid), 
-                                                   result);
-
-       return rc;
-}
-
-/*******************************************************************
-search an attribute and return the first value found.
-******************************************************************/
-static BOOL get_single_attribute (LDAP * ldap_struct, LDAPMessage * entry,
-                                 const char *attribute, pstring value)
-{
-       char **values;
-
-       if ((values = ldap_get_values (ldap_struct, entry, attribute)) == NULL) {
-               value = NULL;
-               DEBUG (10, ("get_single_attribute: [%s] = [<does not exist>]\n", attribute));
+       pstr_sprintf(filter, "(&(%s=%s)%s)", 
+               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID),
+               sid_to_string(sid_string, sid), 
+               get_objclass_filter(ldap_state->schema_ver));
                
-               return False;
-       }
+       rc = smbldap_search_suffix(ldap_state->smbldap_state, filter, attr, result);
        
-       pstrcpy(value, values[0]);
-       ldap_value_free(values);
-#ifdef DEBUG_PASSWORDS
-       DEBUG (100, ("get_single_attribute: [%s] = [%s]\n", attribute, value));
-#endif 
-       return True;
-}
-
-/************************************************************************
-Routine to manage the LDAPMod structure array
-manage memory used by the array, by each struct, and values
-
-************************************************************************/
-static void make_a_mod (LDAPMod *** modlist, int modop, const char *attribute, const char *value)
-{
-       LDAPMod **mods;
-       int i;
-       int j;
-
-       mods = *modlist;
-
-       if (attribute == NULL || *attribute == '\0')
-               return;
-
-#if 0
-       /* Why do we need this??? -- vl */
-               if (value == NULL || *value == '\0')
-               return;
-#endif
-
-       if (mods == NULL) 
-       {
-               mods = (LDAPMod **) malloc(sizeof(LDAPMod *));
-               if (mods == NULL)
-               {
-                       DEBUG(0, ("make_a_mod: out of memory!\n"));
-                       return;
-               }
-               mods[0] = NULL;
-       }
-
-       for (i = 0; mods[i] != NULL; ++i) {
-               if (mods[i]->mod_op == modop && !strcasecmp(mods[i]->mod_type, attribute))
-                       break;
-       }
-
-       if (mods[i] == NULL)
-       {
-               mods = (LDAPMod **) Realloc (mods, (i + 2) * sizeof (LDAPMod *));
-               if (mods == NULL)
-               {
-                       DEBUG(0, ("make_a_mod: out of memory!\n"));
-                       return;
-               }
-               mods[i] = (LDAPMod *) malloc(sizeof(LDAPMod));
-               if (mods[i] == NULL)
-               {
-                       DEBUG(0, ("make_a_mod: out of memory!\n"));
-                       return;
-               }
-               mods[i]->mod_op = modop;
-               mods[i]->mod_values = NULL;
-               mods[i]->mod_type = strdup(attribute);
-               mods[i + 1] = NULL;
-       }
-
-       if (value != NULL)
-       {
-               j = 0;
-               if (mods[i]->mod_values != NULL) {
-                       for (; mods[i]->mod_values[j] != NULL; j++);
-               }
-               mods[i]->mod_values = (char **)Realloc(mods[i]->mod_values,
-                                              (j + 2) * sizeof (char *));
-                                              
-               if (mods[i]->mod_values == NULL) {
-                       DEBUG (0, ("make_a_mod: Memory allocation failure!\n"));
-                       return;
-               }
-               mods[i]->mod_values[j] = strdup(value);
-               mods[i]->mod_values[j + 1] = NULL;
-       }
-       *modlist = mods;
+       return rc;
 }
 
 /*******************************************************************
  Delete complete object or objectclass and attrs from
  object found in search_result depending on lp_ldap_delete_dn
 ******************************************************************/
+
 static NTSTATUS ldapsam_delete_entry(struct ldapsam_privates *ldap_state,
                                     LDAPMessage *result,
                                     const char *objectclass,
                                     const char **attrs)
 {
        int rc;
-       LDAPMessage *entry;
+       LDAPMessage *entry = NULL;
        LDAPMod **mods = NULL;
        char *name, *dn;
        BerElement *ptr = NULL;
 
-       rc = ldap_count_entries(ldap_state->ldap_struct, result);
+       rc = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
 
        if (rc != 1) {
-               DEBUG(0, ("Entry must exist exactly once!\n"));
+               DEBUG(0, ("ldapsam_delete_entry: Entry must exist exactly once!\n"));
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       entry = ldap_first_entry(ldap_state->ldap_struct, result);
-       dn    = ldap_get_dn(ldap_state->ldap_struct, entry);
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
+       dn = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
+       if (!dn) {
+               return NT_STATUS_UNSUCCESSFUL;
+       }
 
        if (lp_ldap_delete_dn()) {
                NTSTATUS ret = NT_STATUS_OK;
-               rc = ldapsam_delete(ldap_state, dn);
+               rc = smbldap_delete(ldap_state->smbldap_state, dn);
 
                if (rc != LDAP_SUCCESS) {
-                       DEBUG(0, ("Could not delete object %s\n", dn));
+                       DEBUG(0, ("ldapsam_delete_entry: Could not delete object %s\n", dn));
                        ret = NT_STATUS_UNSUCCESSFUL;
                }
-               ldap_memfree(dn);
+               SAFE_FREE(dn);
                return ret;
        }
 
        /* Ok, delete only the SAM attributes */
-
-       for (name = ldap_first_attribute(ldap_state->ldap_struct, entry, &ptr);
+       
+       for (name = ldap_first_attribute(ldap_state->smbldap_state->ldap_struct, entry, &ptr);
             name != NULL;
-            name = ldap_next_attribute(ldap_state->ldap_struct, entry, ptr)) {
-
+            name = ldap_next_attribute(ldap_state->smbldap_state->ldap_struct, entry, ptr)) {
                const char **attrib;
 
                /* We are only allowed to delete the attributes that
                   really exist. */
 
                for (attrib = attrs; *attrib != NULL; attrib++) {
-                       if (StrCaseCmp(*attrib, name) == 0) {
-                               DEBUG(10, ("deleting attribute %s\n", name));
-                               make_a_mod(&mods, LDAP_MOD_DELETE, name, NULL);
+                       /* Don't delete LDAP_ATTR_MOD_TIMESTAMP attribute. */
+                       if (strequal(*attrib, get_userattr_key2string(ldap_state->schema_ver,
+                                               LDAP_ATTR_MOD_TIMESTAMP))) {
+                               continue;
+                       }
+                       if (strequal(*attrib, name)) {
+                               DEBUG(10, ("ldapsam_delete_entry: deleting "
+                                          "attribute %s\n", name));
+                               smbldap_set_mod(&mods, LDAP_MOD_DELETE, name,
+                                               NULL);
                        }
                }
 
                ldap_memfree(name);
        }
-
+       
        if (ptr != NULL) {
                ber_free(ptr, 0);
        }
        
-       make_a_mod(&mods, LDAP_MOD_DELETE, "objectClass", objectclass);
+       smbldap_set_mod(&mods, LDAP_MOD_DELETE, "objectClass", objectclass);
 
-       rc = ldapsam_modify(ldap_state, dn, mods);
-       ldap_mods_free(mods, 1);
+       rc = smbldap_modify(ldap_state->smbldap_state, dn, mods);
+       ldap_mods_free(mods, True);
 
        if (rc != LDAP_SUCCESS) {
                char *ld_error = NULL;
-               ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
                                &ld_error);
                
-               DEBUG(0, ("could not delete attributes for %s, error: %s (%s)\n",
+               DEBUG(0, ("ldapsam_delete_entry: Could not delete attributes for %s, error: %s (%s)\n",
                          dn, ldap_err2string(rc), ld_error?ld_error:"unknown"));
                SAFE_FREE(ld_error);
-               ldap_memfree(dn);
+               SAFE_FREE(dn);
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       ldap_memfree(dn);
+       SAFE_FREE(dn);
        return NT_STATUS_OK;
 }
-                                         
+                 
 /* New Interface is being implemented here */
 
+#if 0  /* JERRY - not uesed anymore */
+
 /**********************************************************************
 Initialize SAM_ACCOUNT from an LDAP query (unix attributes only)
 *********************************************************************/
 static BOOL get_unix_attributes (struct ldapsam_privates *ldap_state, 
                                SAM_ACCOUNT * sampass,
-                               LDAPMessage * entry)
+                               LDAPMessage * entry,
+                               gid_t *gid)
 {
        pstring  homedir;
        pstring  temp;
-       uid_t uid;
-       gid_t gid;
        char **ldap_values;
        char **values;
 
-       if ((ldap_values = ldap_get_values (ldap_state->ldap_struct, entry, "objectClass")) == NULL) {
+       if ((ldap_values = ldap_get_values (ldap_state->smbldap_state->ldap_struct, entry, "objectClass")) == NULL) {
                DEBUG (1, ("get_unix_attributes: no objectClass! \n"));
                return False;
        }
 
        for (values=ldap_values;*values;values++) {
-               if (strcasecmp(*values, "posixAccount") == 0) {
+               if (strequal(*values, LDAP_OBJ_POSIXACCOUNT )) {
                        break;
                }
        }
        
        if (!*values) { /*end of array, no posixAccount */
-               DEBUG(10, ("user does not have posixAcccount attributes\n"));
+               DEBUG(10, ("user does not have %s attributes\n", LDAP_OBJ_POSIXACCOUNT));
                ldap_value_free(ldap_values);
                return False;
        }
        ldap_value_free(ldap_values);
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "homeDirectory", homedir)) 
-               return False;
-       
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "uidNumber", temp))
+       if ( !smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_UNIX_HOME), homedir) ) 
+       {
                return False;
+       }
        
-       uid = (uid_t)atol(temp);
-       
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "gidNumber", temp))
+       if ( !smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_GIDNUMBER), temp) )
+       {
                return False;
+       }
        
-       gid = (gid_t)atol(temp);
+       *gid = (gid_t)atol(temp);
 
        pdb_set_unix_homedir(sampass, homedir, PDB_SET);
-       pdb_set_uid(sampass, uid, PDB_SET);
-       pdb_set_gid(sampass, gid, PDB_SET);
        
-       DEBUG(10, ("user has posixAcccount attributes\n"));
+       DEBUG(10, ("user has %s attributes\n", LDAP_OBJ_POSIXACCOUNT));
+       
        return True;
 }
 
+#endif
+
+static time_t ldapsam_get_entry_timestamp(
+       struct ldapsam_privates *ldap_state,
+       LDAPMessage * entry)
+{
+       pstring temp;   
+       struct tm tm;
+
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver,LDAP_ATTR_MOD_TIMESTAMP),
+                       temp))
+               return (time_t) 0;
+
+       strptime(temp, "%Y%m%d%H%M%SZ", &tm);
+       tzset();
+       return timegm(&tm);
+}
 
 /**********************************************************************
-Initialize SAM_ACCOUNT from an LDAP query
-(Based on init_sam_from_buffer in pdb_tdb.c)
+ Initialize SAM_ACCOUNT from an LDAP query.
+ (Based on init_sam_from_buffer in pdb_tdb.c)
 *********************************************************************/
-static BOOL init_sam_from_ldap (struct ldapsam_privates *ldap_state, 
+
+static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state, 
                                SAM_ACCOUNT * sampass,
                                LDAPMessage * entry)
 {
@@ -1002,7 +576,9 @@ static BOOL init_sam_from_ldap (struct ldapsam_privates *ldap_state,
                        kickoff_time,
                        pass_last_set_time, 
                        pass_can_change_time, 
-                       pass_must_change_time;
+                       pass_must_change_time,
+                       ldap_entry_time,
+                       bad_password_time;
        pstring         username, 
                        domain,
                        nt_username,
@@ -1012,21 +588,22 @@ static BOOL init_sam_from_ldap (struct ldapsam_privates *ldap_state,
                        logon_script,
                        profile_path,
                        acct_desc,
-                       munged_dial,
                        workstations;
-       struct passwd   *pw;
-       uint32          user_rid, 
-                       group_rid;
+       char            munged_dial[2048];
+       uint32          user_rid; 
        uint8           smblmpwd[LM_HASH_LEN],
                        smbntpwd[NT_HASH_LEN];
+       BOOL            use_samba_attrs = True;
        uint16          acct_ctrl = 0, 
                        logon_divs;
+       uint16          bad_password_count = 0, 
+                       logon_count = 0;
        uint32 hours_len;
        uint8           hours[MAX_HOURS_LEN];
        pstring temp;
-       uid_t           uid = -1;
-       gid_t           gid = getegid();
-
+       LOGIN_CACHE     *cache_entry = NULL;
+       uint32          pwHistLen;
+       pstring         tmpstring;
 
        /*
         * do a little initialization
@@ -1049,112 +626,116 @@ static BOOL init_sam_from_ldap (struct ldapsam_privates *ldap_state,
                return False;
        }
 
-       if (ldap_state->ldap_struct == NULL) {
-               DEBUG(0, ("init_sam_from_ldap: ldap_state->ldap_struct is NULL!\n"));
+       if (ldap_state->smbldap_state->ldap_struct == NULL) {
+               DEBUG(0, ("init_sam_from_ldap: ldap_state->smbldap_state->ldap_struct is NULL!\n"));
                return False;
        }
        
-       get_single_attribute(ldap_state->ldap_struct, entry, "uid", username);
-       DEBUG(2, ("Entry found for user: %s\n", username));
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, "uid", username)) {
+               DEBUG(1, ("init_sam_from_ldap: No uid attribute found for this user!\n"));
+               return False;
+       }
+
+       DEBUG(2, ("init_sam_from_ldap: Entry found for user: %s\n", username));
 
        pstrcpy(nt_username, username);
 
-       pstrcpy(domain, lp_workgroup());
+       pstrcpy(domain, ldap_state->domain_name);
        
        pdb_set_username(sampass, username, PDB_SET);
 
        pdb_set_domain(sampass, domain, PDB_DEFAULT);
        pdb_set_nt_username(sampass, nt_username, PDB_SET);
 
-       get_single_attribute(ldap_state->ldap_struct, entry, "rid", temp);
-       user_rid = (uint32)atol(temp);
-
-       pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
-
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "primaryGroupID", temp)) {
-               group_rid = 0;
+       /* deal with different attributes between the schema first */
+       
+       if ( ldap_state->schema_ver == SCHEMAVER_SAMBASAMACCOUNT ) {
+               if (smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID), temp)) {
+                       pdb_set_user_sid_from_string(sampass, temp, PDB_SET);
+               }
+               
+               if (smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PRIMARY_GROUP_SID), temp)) {
+                       pdb_set_group_sid_from_string(sampass, temp, PDB_SET);                  
+               } else {
+                       pdb_set_group_sid_from_rid(sampass, DOMAIN_GROUP_RID_USERS, PDB_DEFAULT);
+               }
        } else {
-               group_rid = (uint32)atol(temp);
-               pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
-       }
-
-
-       /* 
-        * If so configured, try and get the values from LDAP 
-        */
-
-       if (!lp_ldap_trust_ids() || (!get_unix_attributes(ldap_state, sampass, entry))) {
+               if (smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_RID), temp)) {
+                       user_rid = (uint32)atol(temp);
+                       pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
+               }
                
-               /* 
-                * Otherwise just ask the system getpw() calls.
-                */
-       
-               pw = getpwnam_alloc(username);
-               if (pw == NULL) {
-                       if (! ldap_state->permit_non_unix_accounts) {
-                               DEBUG (2,("init_sam_from_ldap: User [%s] does not exist via system getpwnam!\n", username));
-                               return False;
-                       }
+               if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PRIMARY_GROUP_RID), temp)) {
+                       pdb_set_group_sid_from_rid(sampass, DOMAIN_GROUP_RID_USERS, PDB_DEFAULT);
                } else {
-                       uid = pw->pw_uid;
-                       pdb_set_uid(sampass, uid, PDB_SET);
-                       gid = pw->pw_gid;
-                       pdb_set_gid(sampass, gid, PDB_SET);
+                       uint32 group_rid;
                        
-                       pdb_set_unix_homedir(sampass, pw->pw_dir, PDB_SET);
-
-                       passwd_free(&pw);
+                       group_rid = (uint32)atol(temp);
+                       
+                       /* for some reason, we often have 0 as a primary group RID.
+                          Make sure that we treat this just as a 'default' value */
+                          
+                       if ( group_rid > 0 )
+                               pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
+                       else
+                               pdb_set_group_sid_from_rid(sampass, DOMAIN_GROUP_RID_USERS, PDB_DEFAULT);
                }
        }
 
-       if (group_rid == 0 && pdb_get_init_flags(sampass,PDB_GID) != PDB_DEFAULT) {
-               GROUP_MAP map;
-               gid = pdb_get_gid(sampass);
-               /* call the mapping code here */
-               if(pdb_getgrgid(&map, gid, MAPPING_WITHOUT_PRIV)) {
-                       pdb_set_group_sid(sampass, &map.sid, PDB_SET);
-               } 
-               else {
-                       pdb_set_group_sid_from_rid(sampass, pdb_gid_to_group_rid(gid), PDB_SET);
-               }
+       if (pdb_get_init_flags(sampass,PDB_USERSID) == PDB_DEFAULT) {
+               DEBUG(1, ("init_sam_from_ldap: no %s or %s attribute found for this user %s\n", 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID),
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_RID),
+                       username));
+               return False;
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "pwdLastSet", temp)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_LAST_SET), temp)) {
                /* leave as default */
        } else {
                pass_last_set_time = (time_t) atol(temp);
                pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "logonTime", temp)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_TIME), temp)) {
                /* leave as default */
        } else {
                logon_time = (time_t) atol(temp);
                pdb_set_logon_time(sampass, logon_time, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "logoffTime", temp)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGOFF_TIME), temp)) {
                /* leave as default */
        } else {
                logoff_time = (time_t) atol(temp);
                pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "kickoffTime", temp)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_KICKOFF_TIME), temp)) {
                /* leave as default */
        } else {
                kickoff_time = (time_t) atol(temp);
                pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "pwdCanChange", temp)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_CAN_CHANGE), temp)) {
                /* leave as default */
        } else {
                pass_can_change_time = (time_t) atol(temp);
                pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "pwdMustChange", temp)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_MUST_CHANGE), temp)) {    
                /* leave as default */
        } else {
                pass_must_change_time = (time_t) atol(temp);
@@ -1167,10 +748,10 @@ static BOOL init_sam_from_ldap (struct ldapsam_privates *ldap_state,
         * that fits your needs; using cn then displayName rather than 'userFullName'
         */
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry,
-                                 "displayName", fullname)) {
-               if (!get_single_attribute(ldap_state->ldap_struct, entry,
-                                         "cn", fullname)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_DISPLAY_NAME), fullname)) {
+               if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_CN), fullname)) {
                        /* leave as default */
                } else {
                        pdb_set_fullname(sampass, fullname, PDB_SET);
@@ -1179,85 +760,178 @@ static BOOL init_sam_from_ldap (struct ldapsam_privates *ldap_state,
                pdb_set_fullname(sampass, fullname, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "homeDrive", dir_drive)) {
-               pdb_set_dir_drive(sampass, talloc_sub_specified(sampass->mem_ctx, 
-                                                                 lp_logon_drive(),
-                                                                 username, domain, 
-                                                                 uid, gid),
-                                 PDB_DEFAULT);
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_HOME_DRIVE), dir_drive)) 
+       {
+               pdb_set_dir_drive( sampass, lp_logon_drive(), PDB_DEFAULT );
        } else {
                pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "smbHome", homedir)) {
-               pdb_set_homedir(sampass, talloc_sub_specified(sampass->mem_ctx, 
-                                                                 lp_logon_home(),
-                                                                 username, domain
-                                                                 uid, gid), 
-                                 PDB_DEFAULT);
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_HOME_PATH), homedir)) 
+       {
+               pdb_set_homedir( sampass
+                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_home()),
+                       PDB_DEFAULT );
        } else {
-               pdb_set_homedir(sampass, homedir, PDB_SET);
+               pstrcpy( tmpstring, homedir );
+               standard_sub_basic( username, tmpstring, sizeof(tmpstring) );
+               pdb_set_homedir(sampass, tmpstring, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "scriptPath", logon_script)) {
-               pdb_set_logon_script(sampass, talloc_sub_specified(sampass->mem_ctx, 
-                                                                    lp_logon_script(),
-                                                                    username, domain
-                                                                    uid, gid), 
-                                    PDB_DEFAULT);
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_SCRIPT), logon_script)) 
+       {
+               pdb_set_logon_script( sampass
+                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_script()), 
+                       PDB_DEFAULT );
        } else {
-               pdb_set_logon_script(sampass, logon_script, PDB_SET);
+               pstrcpy( tmpstring, logon_script );
+               standard_sub_basic( username, tmpstring, sizeof(tmpstring) );
+               pdb_set_logon_script(sampass, tmpstring, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "profilePath", profile_path)) {
-               pdb_set_profile_path(sampass, talloc_sub_specified(sampass->mem_ctx, 
-                                                                    lp_logon_path(),
-                                                                    username, domain
-                                                                    uid, gid), 
-                                    PDB_DEFAULT);
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PROFILE_PATH), profile_path)) 
+       {
+               pdb_set_profile_path( sampass
+                       talloc_sub_basic( sampass->mem_ctx, username, lp_logon_path()),
+                       PDB_DEFAULT );
        } else {
-               pdb_set_profile_path(sampass, profile_path, PDB_SET);
+               pstrcpy( tmpstring, profile_path );
+               standard_sub_basic( username, tmpstring, sizeof(tmpstring) );
+               pdb_set_profile_path(sampass, tmpstring, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "description", acct_desc)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_DESC), acct_desc)) 
+       {
                /* leave as default */
        } else {
                pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "userWorkstations", workstations)) {
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_WKS), workstations)) {
                /* leave as default */;
        } else {
                pdb_set_workstations(sampass, workstations, PDB_SET);
        }
 
+       if (!smbldap_get_single_attribute(ldap_state->smbldap_state->ldap_struct, entry, 
+               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_MUNGED_DIAL), munged_dial, sizeof(munged_dial))) {
+               /* leave as default */;
+       } else {
+               pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
+       }
+       
        /* FIXME: hours stuff should be cleaner */
        
        logon_divs = 168;
        hours_len = 21;
        memset(hours, 0xff, hours_len);
 
-       if (!get_single_attribute (ldap_state->ldap_struct, entry, "lmPassword", temp)) {
-               /* leave as default */
-       } else {
-               pdb_gethexpwd(temp, smblmpwd);
-               memset((char *)temp, '\0', strlen(temp)+1);
-               if (!pdb_set_lanman_passwd(sampass, smblmpwd, PDB_SET))
-                       return False;
-               ZERO_STRUCT(smblmpwd);
+       if (ldap_state->is_nds_ldap) {
+               char *user_dn;
+               size_t pwd_len;
+               char clear_text_pw[512];
+   
+               /* Make call to Novell eDirectory ldap extension to get clear text password.
+                       NOTE: This will only work if we have an SSL connection to eDirectory. */
+               user_dn = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
+               if (user_dn != NULL) {
+                       DEBUG(3, ("init_sam_from_ldap: smbldap_get_dn(%s) returned '%s'\n", username, user_dn));
+
+                       pwd_len = sizeof(clear_text_pw);
+                       if (pdb_nds_get_password(ldap_state->smbldap_state, user_dn, &pwd_len, clear_text_pw) == LDAP_SUCCESS) {
+                               nt_lm_owf_gen(clear_text_pw, smbntpwd, smblmpwd);
+                               if (!pdb_set_lanman_passwd(sampass, smblmpwd, PDB_SET))
+                                       return False;
+                               ZERO_STRUCT(smblmpwd);
+                               if (!pdb_set_nt_passwd(sampass, smbntpwd, PDB_SET))
+                                       return False;
+                               ZERO_STRUCT(smbntpwd);
+                               use_samba_attrs = False;
+                       }
+               } else {
+                       DEBUG(0, ("init_sam_from_ldap: failed to get user_dn for '%s'\n", username));
+               }
        }
 
-       if (!get_single_attribute (ldap_state->ldap_struct, entry, "ntPassword", temp)) {
-               /* leave as default */
-       } else {
-               pdb_gethexpwd(temp, smbntpwd);
-               memset((char *)temp, '\0', strlen(temp)+1);
-               if (!pdb_set_nt_passwd(sampass, smbntpwd, PDB_SET))
+       if (use_samba_attrs) {
+               if (!smbldap_get_single_pstring (ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LMPW), temp)) {
+                       /* leave as default */
+               } else {
+                       pdb_gethexpwd(temp, smblmpwd);
+                       memset((char *)temp, '\0', strlen(temp)+1);
+                       if (!pdb_set_lanman_passwd(sampass, smblmpwd, PDB_SET))
+                               return False;
+                       ZERO_STRUCT(smblmpwd);
+               }
+
+               if (!smbldap_get_single_pstring (ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_NTPW), temp)) {
+                       /* leave as default */
+               } else {
+                       pdb_gethexpwd(temp, smbntpwd);
+                       memset((char *)temp, '\0', strlen(temp)+1);
+                       if (!pdb_set_nt_passwd(sampass, smbntpwd, PDB_SET))
+                               return False;
+                       ZERO_STRUCT(smbntpwd);
+               }
+       }
+
+       pwHistLen = 0;
+
+       pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
+       if (pwHistLen > 0){
+               uint8 *pwhist = NULL;
+               int i;
+
+               /* We can only store (sizeof(pstring)-1)/64 password history entries. */
+               pwHistLen = MIN(pwHistLen, ((sizeof(temp)-1)/64));
+
+               if ((pwhist = SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN)) == NULL){
+                       DEBUG(0, ("init_sam_from_ldap: malloc failed!\n"));
+                       return False;
+               }
+               memset(pwhist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
+
+               if (!smbldap_get_single_pstring (ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_HISTORY), temp)) {
+                       /* leave as default - zeros */
+               } else {
+                       BOOL hex_failed = False;
+                       for (i = 0; i < pwHistLen; i++){
+                               /* Get the 16 byte salt. */
+                               if (!pdb_gethexpwd(&temp[i*64], &pwhist[i*PW_HISTORY_ENTRY_LEN])) {
+                                       hex_failed = True;
+                                       break;
+                               }
+                               /* Get the 16 byte MD5 hash of salt+passwd. */
+                               if (!pdb_gethexpwd(&temp[(i*64)+32],
+                                               &pwhist[(i*PW_HISTORY_ENTRY_LEN)+PW_HISTORY_SALT_LEN])) {
+                                       hex_failed = True;
+                                       break;
+                               }
+                       }
+                       if (hex_failed) {
+                               DEBUG(0,("init_sam_from_ldap: Failed to get password history for user %s\n",
+                                       username));
+                               memset(pwhist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
+                       }
+               }
+               if (!pdb_set_pw_history(sampass, pwhist, pwHistLen, PDB_SET)){
+                       SAFE_FREE(pwhist);
                        return False;
-               ZERO_STRUCT(smbntpwd);
+               }
+               SAFE_FREE(pwhist);
        }
 
-       if (!get_single_attribute (ldap_state->ldap_struct, entry, "acctFlags", temp)) {
+       if (!smbldap_get_single_pstring (ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_ACB_INFO), temp)) {
                acct_ctrl |= ACB_NORMAL;
        } else {
                acct_ctrl = pdb_decode_acct_ctrl(temp);
@@ -1271,86 +945,91 @@ static BOOL init_sam_from_ldap (struct ldapsam_privates *ldap_state,
        pdb_set_hours_len(sampass, hours_len, PDB_SET);
        pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
 
-       pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
-       
-       /* pdb_set_unknown_3(sampass, unknown3, PDB_SET); */
-       /* pdb_set_unknown_5(sampass, unknown5, PDB_SET); */
-       /* pdb_set_unknown_6(sampass, unknown6, PDB_SET); */
-
-       pdb_set_hours(sampass, hours, PDB_SET);
-
-       return True;
-}
-
-/**********************************************************************
-  An LDAP modification is needed in two cases:
-  * If we are updating the record AND the attribute is CHANGED.
-  * If we are adding   the record AND it is SET or CHANGED (ie not default)
-*********************************************************************/
-static BOOL need_ldap_mod(BOOL pdb_add, const SAM_ACCOUNT * sampass, enum pdb_elements element) {
-       if (pdb_add) {
-               return (!IS_SAM_DEFAULT(sampass, element));
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_BAD_PASSWORD_COUNT), temp)) {
+                       /* leave as default */
        } else {
-               return IS_SAM_CHANGED(sampass, element);
-       }
-}
-
-/**********************************************************************
-  Set attribute to newval in LDAP, regardless of what value the
-  attribute had in LDAP before.
-*********************************************************************/
-static void make_ldap_mod(LDAP *ldap_struct, LDAPMessage *existing,
-                         LDAPMod ***mods,
-                         const char *attribute, const char *newval)
-{
-       char **values = NULL;
-
-       if (existing != NULL) {
-               values = ldap_get_values(ldap_struct, existing, attribute);
+               bad_password_count = (uint32) atol(temp);
+               pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
        }
 
-       if ((values != NULL) && (values[0] != NULL) &&
-           strcmp(values[0], newval) == 0) {
-               
-               /* Believe it or not, but LDAP will deny a delete and
-                  an add at the same time if the values are the
-                  same... */
-
-               ldap_value_free(values);
-               return;
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_BAD_PASSWORD_TIME), temp)) {
+               /* leave as default */
+       } else {
+               bad_password_time = (time_t) atol(temp);
+               pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
        }
 
-       /* Regardless of the real operation (add or modify)
-          we add the new value here. We rely on deleting
-          the old value, should it exist. */
-
-       if ((newval != NULL) && (strlen(newval) > 0)) {
-               make_a_mod(mods, LDAP_MOD_ADD, attribute, newval);
-       }
 
-       if (values == NULL) {
-               /* There has been no value before, so don't delete it.
-                  Here's a possible race: We might end up with
-                  duplicate attributes */
-               return;
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_COUNT), temp)) {
+                       /* leave as default */
+       } else {
+               logon_count = (uint32) atol(temp);
+               pdb_set_logon_count(sampass, logon_count, PDB_SET);
        }
 
-       /* By deleting exactly the value we found in the entry this
-          should be race-free in the sense that the LDAP-Server will
-          deny the complete operation if somebody changed the
-          attribute behind our back. */
+       /* pdb_set_unknown_6(sampass, unknown6, PDB_SET); */
 
-       make_a_mod(mods, LDAP_MOD_DELETE, attribute, values[0]);
-       ldap_value_free(values);
+       if(!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_HOURS), temp)) {
+                       /* leave as default */
+       } else {
+               pdb_gethexhours(temp, hours);
+               memset((char *)temp, '\0', strlen(temp) +1);
+               pdb_set_hours(sampass, hours, PDB_SET);
+               ZERO_STRUCT(hours);
+       }
+
+       /* check the timestamp of the cache vs ldap entry */
+       if (!(ldap_entry_time = ldapsam_get_entry_timestamp(ldap_state, 
+                                                           entry)))
+               return True;
+
+       /* see if we have newer updates */
+       if (!(cache_entry = login_cache_read(sampass))) {
+               DEBUG (9, ("No cache entry, bad count = %u, bad time = %u\n",
+                          (unsigned int)pdb_get_bad_password_count(sampass),
+                          (unsigned int)pdb_get_bad_password_time(sampass)));
+               return True;
+       }
+
+       DEBUG(7, ("ldap time is %u, cache time is %u, bad time = %u\n", 
+                 (unsigned int)ldap_entry_time, (unsigned int)cache_entry->entry_timestamp, 
+                 (unsigned int)cache_entry->bad_password_time));
+
+       if (ldap_entry_time > cache_entry->entry_timestamp) {
+               /* cache is older than directory , so
+                  we need to delete the entry but allow the 
+                  fields to be written out */
+               login_cache_delentry(sampass);
+       } else {
+               /* read cache in */
+               pdb_set_acct_ctrl(sampass, 
+                                 pdb_get_acct_ctrl(sampass) | 
+                                 (cache_entry->acct_ctrl & ACB_AUTOLOCK),
+                                 PDB_SET);
+               pdb_set_bad_password_count(sampass, 
+                                          cache_entry->bad_password_count, 
+                                          PDB_SET);
+               pdb_set_bad_password_time(sampass, 
+                                         cache_entry->bad_password_time, 
+                                         PDB_SET);
+       }
+
+       SAFE_FREE(cache_entry);
+       return True;
 }
 
 /**********************************************************************
-Initialize SAM_ACCOUNT from an LDAP query
-(Based on init_buffer_from_sam in pdb_tdb.c)
+ Initialize the ldap db from a SAM_ACCOUNT. Called on update.
+ (Based on init_buffer_from_sam in pdb_tdb.c)
 *********************************************************************/
+
 static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state, 
                                LDAPMessage *existing,
-                               LDAPMod *** mods, const SAM_ACCOUNT * sampass,
+                               LDAPMod *** mods, SAM_ACCOUNT * sampass,
                                BOOL (*need_update)(const SAM_ACCOUNT *,
                                                    enum pdb_elements))
 {
@@ -1369,62 +1048,79 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
         * do this on a per-mod basis
         */
        if (need_update(sampass, PDB_USERNAME))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods, 
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods, 
                              "uid", pdb_get_username(sampass));
 
-       DEBUG(2, ("Setting entry for user: %s\n", pdb_get_username(sampass)));
-
-       rid = pdb_get_user_rid(sampass);
-
-       if (rid == 0) {
-               if (!IS_SAM_DEFAULT(sampass, PDB_UID)) {
-                       rid = fallback_pdb_uid_to_user_rid(pdb_get_uid(sampass));
-               } else if (ldap_state->permit_non_unix_accounts) {
-                       rid = ldapsam_get_next_available_nua_rid(ldap_state);
-                       if (rid == 0) {
-                               DEBUG(0, ("NO user RID specified on account %s, and "
-                                         "finding next available NUA RID failed, "
-                                         "cannot store!\n",
-                                         pdb_get_username(sampass)));
-                               ldap_mods_free(*mods, 1);
-                               return False;
-                       }
-               } else {
-                       DEBUG(0, ("NO user RID specified on account %s, "
-                                 "cannot store!\n", pdb_get_username(sampass)));
-                       ldap_mods_free(*mods, 1);
-                       return False;
-               }
-       }
-
-       slprintf(temp, sizeof(temp) - 1, "%i", rid);
-
-       if (need_update(sampass, PDB_USERSID))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "rid", temp);
+       DEBUG(2, ("init_ldap_from_sam: Setting entry for user: %s\n", pdb_get_username(sampass)));
 
+       /* only update the RID if we actually need to */
+       if (need_update(sampass, PDB_USERSID)) {
+               fstring sid_string;
+               fstring dom_sid_string;
+               const DOM_SID *user_sid = pdb_get_user_sid(sampass);
+               
+               switch ( ldap_state->schema_ver ) {
+                       case SCHEMAVER_SAMBAACCOUNT:
+                               if (!sid_peek_check_rid(&ldap_state->domain_sid, user_sid, &rid)) {
+                                       DEBUG(1, ("init_ldap_from_sam: User's SID (%s) is not for this domain (%s), cannot add to LDAP!\n", 
+                                               sid_to_string(sid_string, user_sid), 
+                                               sid_to_string(dom_sid_string, &ldap_state->domain_sid)));
+                                       return False;
+                               }
+                               slprintf(temp, sizeof(temp) - 1, "%i", rid);
+                               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_RID), 
+                                       temp);
+                               break;
+                               
+                       case SCHEMAVER_SAMBASAMACCOUNT:
+                               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID), 
+                                       sid_to_string(sid_string, user_sid));                                 
+                               break;
+                               
+                       default:
+                               DEBUG(0,("init_ldap_from_sam: unknown schema version specified\n"));
+                               break;
+               }               
+       }
 
-       rid = pdb_get_group_rid(sampass);
+       /* we don't need to store the primary group RID - so leaving it
+          'free' to hang off the unix primary group makes life easier */
 
-       if (rid == 0) {
-               if (!IS_SAM_DEFAULT(sampass, PDB_GID)) {
-                       rid = pdb_gid_to_group_rid(pdb_get_gid(sampass));
-               } else if (ldap_state->permit_non_unix_accounts) {
-                       rid = DOMAIN_GROUP_RID_USERS;
-               } else {
-                       DEBUG(0, ("NO group RID specified on account %s, "
-                                 "cannot store!\n", pdb_get_username(sampass)));
-                       ldap_mods_free(*mods, 1);
-                       return False;
+       if (need_update(sampass, PDB_GROUPSID)) {
+               fstring sid_string;
+               fstring dom_sid_string;
+               const DOM_SID *group_sid = pdb_get_group_sid(sampass);
+               
+               switch ( ldap_state->schema_ver ) {
+                       case SCHEMAVER_SAMBAACCOUNT:
+                               if (!sid_peek_check_rid(&ldap_state->domain_sid, group_sid, &rid)) {
+                                       DEBUG(1, ("init_ldap_from_sam: User's Primary Group SID (%s) is not for this domain (%s), cannot add to LDAP!\n",
+                                               sid_to_string(sid_string, group_sid),
+                                               sid_to_string(dom_sid_string, &ldap_state->domain_sid)));
+                                       return False;
+                               }
+
+                               slprintf(temp, sizeof(temp) - 1, "%i", rid);
+                               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                       get_userattr_key2string(ldap_state->schema_ver, 
+                                       LDAP_ATTR_PRIMARY_GROUP_RID), temp);
+                               break;
+                               
+                       case SCHEMAVER_SAMBASAMACCOUNT:
+                               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                       get_userattr_key2string(ldap_state->schema_ver, 
+                                       LDAP_ATTR_PRIMARY_GROUP_SID), sid_to_string(sid_string, group_sid));
+                               break;
+                               
+                       default:
+                               DEBUG(0,("init_ldap_from_sam: unknown schema version specified\n"));
+                               break;
                }
+               
        }
-
-       slprintf(temp, sizeof(temp) - 1, "%i", rid);
-
-       if (need_update(sampass, PDB_GROUPSID))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "primaryGroupID", temp);
-
+       
        /* displayName, cn, and gecos should all be the same
         *  most easily accomplished by giving them the same OID
         *  gecos isn't set here b/c it should be handled by the 
@@ -1434,271 +1130,264 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
         */
 
        if (need_update(sampass, PDB_FULLNAME))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "displayName", pdb_get_fullname(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_DISPLAY_NAME), 
+                       pdb_get_fullname(sampass));
 
        if (need_update(sampass, PDB_ACCTDESC))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "description", pdb_get_acct_desc(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_DESC), 
+                       pdb_get_acct_desc(sampass));
 
        if (need_update(sampass, PDB_WORKSTATIONS))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "userWorkstations", pdb_get_workstations(sampass));
-
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_WKS), 
+                       pdb_get_workstations(sampass));
+       
+       if (need_update(sampass, PDB_MUNGEDDIAL))
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_MUNGED_DIAL), 
+                       pdb_get_munged_dial(sampass));
+       
        if (need_update(sampass, PDB_SMBHOME))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "smbHome", pdb_get_homedir(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_HOME_PATH), 
+                       pdb_get_homedir(sampass));
                        
        if (need_update(sampass, PDB_DRIVE))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "homeDrive", pdb_get_dir_drive(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_HOME_DRIVE), 
+                       pdb_get_dir_drive(sampass));
 
        if (need_update(sampass, PDB_LOGONSCRIPT))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "scriptPath", pdb_get_logon_script(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_SCRIPT), 
+                       pdb_get_logon_script(sampass));
 
        if (need_update(sampass, PDB_PROFILE))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "profilePath", pdb_get_profile_path(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PROFILE_PATH), 
+                       pdb_get_profile_path(sampass));
 
        slprintf(temp, sizeof(temp) - 1, "%li", pdb_get_logon_time(sampass));
-
        if (need_update(sampass, PDB_LOGONTIME))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "logonTime", temp);
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_TIME), temp);
 
        slprintf(temp, sizeof(temp) - 1, "%li", pdb_get_logoff_time(sampass));
-
        if (need_update(sampass, PDB_LOGOFFTIME))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "logoffTime", temp);
-
-       slprintf (temp, sizeof (temp) - 1, "%li",
-                 pdb_get_kickoff_time(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGOFF_TIME), temp);
 
+       slprintf (temp, sizeof (temp) - 1, "%li", pdb_get_kickoff_time(sampass));
        if (need_update(sampass, PDB_KICKOFFTIME))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "kickoffTime", temp);
-
-       slprintf (temp, sizeof (temp) - 1, "%li",
-                 pdb_get_pass_can_change_time(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_KICKOFF_TIME), temp);
 
+       slprintf (temp, sizeof (temp) - 1, "%li", pdb_get_pass_can_change_time(sampass));
        if (need_update(sampass, PDB_CANCHANGETIME))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "pwdCanChange", temp);
-
-       slprintf (temp, sizeof (temp) - 1, "%li",
-                 pdb_get_pass_must_change_time(sampass));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_CAN_CHANGE), temp);
 
+       slprintf (temp, sizeof (temp) - 1, "%li", pdb_get_pass_must_change_time(sampass));
        if (need_update(sampass, PDB_MUSTCHANGETIME))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "pwdMustChange", temp);
-
-       if ((pdb_get_acct_ctrl(sampass)&(ACB_WSTRUST|ACB_SVRTRUST|ACB_DOMTRUST))||
-           (lp_ldap_passwd_sync()!=LDAP_PASSWD_SYNC_ONLY)) {
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_MUST_CHANGE), temp);
 
-               pdb_sethexpwd (temp, pdb_get_lanman_passwd(sampass),
-                              pdb_get_acct_ctrl(sampass));
 
-               if (need_update(sampass, PDB_LMPASSWD))
-                       make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                                     "lmPassword", temp);
+       if ((pdb_get_acct_ctrl(sampass)&(ACB_WSTRUST|ACB_SVRTRUST|ACB_DOMTRUST))
+                       || (lp_ldap_passwd_sync()!=LDAP_PASSWD_SYNC_ONLY)) {
 
-               pdb_sethexpwd (temp, pdb_get_nt_passwd(sampass),
-                              pdb_get_acct_ctrl(sampass));
-
-               if (need_update(sampass, PDB_NTPASSWD))
-                       make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                                     "ntPassword", temp);
+               if (need_update(sampass, PDB_LMPASSWD)) {
+                       const uchar *lm_pw =  pdb_get_lanman_passwd(sampass);
+                       if (lm_pw) {
+                               pdb_sethexpwd(temp, lm_pw,
+                                             pdb_get_acct_ctrl(sampass));
+                               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                                get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LMPW), 
+                                                temp);
+                       } else {
+                               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                                get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LMPW), 
+                                                NULL);
+                       }
+               }
+               if (need_update(sampass, PDB_NTPASSWD)) {
+                       const uchar *nt_pw =  pdb_get_nt_passwd(sampass);
+                       if (nt_pw) {
+                               pdb_sethexpwd(temp, nt_pw,
+                                             pdb_get_acct_ctrl(sampass));
+                               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                                get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_NTPW), 
+                                                temp);
+                       } else {
+                               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                                get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_NTPW), 
+                                                NULL);
+                       }
+               }
 
-               slprintf (temp, sizeof (temp) - 1, "%li",
-                         pdb_get_pass_last_set_time(sampass));
+               if (need_update(sampass, PDB_PWHISTORY)) {
+                       uint32 pwHistLen = 0;
+                       pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
+                       if (pwHistLen == 0) {
+                               /* Remove any password history from the LDAP store. */
+                               memset(temp, '0', 64); /* NOTE !!!! '0' *NOT '\0' */
+                               temp[64] = '\0';
+                       } else {
+                               int i; 
+                               uint32 currHistLen = 0;
+                               const uint8 *pwhist = pdb_get_pw_history(sampass, &currHistLen);
+                               if (pwhist != NULL) {
+                                       /* We can only store (sizeof(pstring)-1)/64 password history entries. */
+                                       pwHistLen = MIN(pwHistLen, ((sizeof(temp)-1)/64));
+                                       for (i=0; i< pwHistLen && i < currHistLen; i++) {
+                                               /* Store the salt. */
+                                               pdb_sethexpwd(&temp[i*64], &pwhist[i*PW_HISTORY_ENTRY_LEN], 0);
+                                               /* Followed by the md5 hash of salt + md4 hash */
+                                               pdb_sethexpwd(&temp[(i*64)+32],
+                                                       &pwhist[(i*PW_HISTORY_ENTRY_LEN)+PW_HISTORY_SALT_LEN], 0);
+                                               DEBUG(100, ("temp=%s\n", temp));
+                                       }
+                               } 
+                       }
+                       smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_HISTORY), 
+                                        temp);
+               }
 
-               if (need_update(sampass, PDB_PASSLASTSET))
-                       make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                                     "pwdLastSet", temp);
+               if (need_update(sampass, PDB_PASSLASTSET)) {
+                       slprintf (temp, sizeof (temp) - 1, "%li", pdb_get_pass_last_set_time(sampass));
+                       smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_LAST_SET), 
+                               temp);
+               }
        }
 
-       /* FIXME: Hours stuff goes in LDAP  */
+       if (need_update(sampass, PDB_HOURS)) {
+               const uint8 *hours = pdb_get_hours(sampass);
+               if (hours) {
+                       pdb_sethexhours(temp, hours);
+                       smbldap_make_mod(ldap_state->smbldap_state->ldap_struct,
+                               existing,
+                               mods,
+                               get_userattr_key2string(ldap_state->schema_ver,
+                                               LDAP_ATTR_LOGON_HOURS),
+                               temp);
+               }
+       }
 
        if (need_update(sampass, PDB_ACCTCTRL))
-               make_ldap_mod(ldap_state->ldap_struct, existing, mods,
-                             "acctFlags",
-                             pdb_encode_acct_ctrl (pdb_get_acct_ctrl(sampass),
-                                                   NEW_PW_FORMAT_SPACE_PADDED_LEN));
+               smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
+                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_ACB_INFO), 
+                       pdb_encode_acct_ctrl (pdb_get_acct_ctrl(sampass), NEW_PW_FORMAT_SPACE_PADDED_LEN));
+
+       /* password lockout cache: 
+          - If we are now autolocking or clearing, we write to ldap
+          - If we are clearing, we delete the cache entry
+          - If the count is > 0, we update the cache
+
+          This even means when autolocking, we cache, just in case the
+          update doesn't work, and we have to cache the autolock flag */
+
+       if (need_update(sampass, PDB_BAD_PASSWORD_COUNT))  /* &&
+           need_update(sampass, PDB_BAD_PASSWORD_TIME)) */ {
+               uint16 badcount = pdb_get_bad_password_count(sampass);
+               time_t badtime = pdb_get_bad_password_time(sampass);
+               uint32 pol;
+               pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT, &pol);
+
+               DEBUG(3, ("updating bad password fields, policy=%u, count=%u, time=%u\n",
+                       (unsigned int)pol, (unsigned int)badcount, (unsigned int)badtime));
+
+               if ((badcount >= pol) || (badcount == 0)) {
+                       DEBUG(7, ("making mods to update ldap, count=%u, time=%u\n",
+                               (unsigned int)badcount, (unsigned int)badtime));
+                       slprintf (temp, sizeof (temp) - 1, "%li", (long)badcount);
+                       smbldap_make_mod(
+                               ldap_state->smbldap_state->ldap_struct,
+                               existing, mods, 
+                               get_userattr_key2string(
+                                       ldap_state->schema_ver, 
+                                       LDAP_ATTR_BAD_PASSWORD_COUNT),
+                               temp);
+
+                       slprintf (temp, sizeof (temp) - 1, "%li", badtime);
+                       smbldap_make_mod(
+                               ldap_state->smbldap_state->ldap_struct, 
+                               existing, mods,
+                               get_userattr_key2string(
+                                       ldap_state->schema_ver, 
+                                       LDAP_ATTR_BAD_PASSWORD_TIME), 
+                               temp);
+               }
+               if (badcount == 0) {
+                       DEBUG(7, ("bad password count is reset, deleting login cache entry for %s\n", pdb_get_nt_username(sampass)));
+                       login_cache_delentry(sampass);
+               } else {
+                       LOGIN_CACHE cache_entry;
+
+                       cache_entry.entry_timestamp = time(NULL);
+                       cache_entry.acct_ctrl = pdb_get_acct_ctrl(sampass);
+                       cache_entry.bad_password_count = badcount;
+                       cache_entry.bad_password_time = badtime;
+
+                       DEBUG(7, ("Updating bad password count and time in login cache\n"));
+                       login_cache_write(sampass, cache_entry);
+               }
+       }
 
        return True;
 }
 
-
 /**********************************************************************
-Connect to LDAP server and find the next available RID.
+ Connect to LDAP server for password enumeration.
 *********************************************************************/
-static uint32 check_nua_rid_is_avail(struct ldapsam_privates *ldap_state, uint32 top_rid) 
-{
-       LDAPMessage *result;
-       uint32 final_rid = (top_rid & (~USER_RID_TYPE)) + RID_MULTIPLIER;
-       if (top_rid == 0) {
-               return 0;
-       }
-       
-       if (final_rid < ldap_state->low_nua_rid || final_rid > ldap_state->high_nua_rid) {
-               return 0;
-       }
 
-       if (ldapsam_search_one_user_by_rid(ldap_state, final_rid, &result) != LDAP_SUCCESS) {
-               DEBUG(0, ("Cannot allocate NUA RID %d (0x%x), as the confirmation search failed!\n", final_rid, final_rid));
-               return 0;
-       }
-
-       if (ldap_count_entries(ldap_state->ldap_struct, result) != 0) {
-               DEBUG(0, ("Cannot allocate NUA RID %d (0x%x), as the RID is already in use!!\n", final_rid, final_rid));
-               ldap_msgfree(result);
-               return 0;
-       }
+static NTSTATUS ldapsam_setsampwent(struct pdb_methods *my_methods, BOOL update, uint16 acb_mask)
+{
+       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
+       int rc;
+       pstring filter, suffix;
+       const char **attr_list;
+       BOOL machine_mask = False, user_mask = False;
 
-       DEBUG(5, ("NUA RID %d (0x%x), declared valid\n", final_rid, final_rid));
-       ldap_msgfree(result);
-       return final_rid;
-}
+       pstr_sprintf( filter, "(&%s%s)", "(uid=%u)", 
+               get_objclass_filter(ldap_state->schema_ver));
+       all_string_sub(filter, "%u", "*", sizeof(pstring));
 
-/**********************************************************************
-Extract the RID from an LDAP entry
-*********************************************************************/
-static uint32 entry_to_user_rid(struct ldapsam_privates *ldap_state, LDAPMessage *entry) {
-       uint32 rid;
-       SAM_ACCOUNT *user = NULL;
-       if (!NT_STATUS_IS_OK(pdb_init_sam(&user))) {
-               return 0;
-       }
+       machine_mask    = ((acb_mask != 0) && (acb_mask & (ACB_WSTRUST|ACB_SVRTRUST|ACB_DOMTRUST)));
+       user_mask       = ((acb_mask != 0) && (acb_mask & ACB_NORMAL));
 
-       if (init_sam_from_ldap(ldap_state, user, entry)) {
-               rid = pdb_get_user_rid(user);
+       if (machine_mask) {
+               pstrcpy(suffix, lp_ldap_machine_suffix());
+       } else if (user_mask) {
+               pstrcpy(suffix, lp_ldap_user_suffix());
        } else {
-               rid =0;
+               pstrcpy(suffix, lp_ldap_suffix());
        }
-       pdb_free_sam(&user);
-       if (rid >= ldap_state->low_nua_rid && rid <= ldap_state->high_nua_rid) {
-               return rid;
-       }
-       return 0;
-}
 
+       DEBUG(10,("ldapsam_setsampwent: LDAP Query for acb_mask 0x%x will use suffix %s\n", 
+               acb_mask, suffix));
 
-/**********************************************************************
-Connect to LDAP server and find the next available RID.
-*********************************************************************/
-static uint32 search_top_nua_rid(struct ldapsam_privates *ldap_state)
-{
-       int rc;
-       pstring filter;
-       LDAPMessage *result;
-       LDAPMessage *entry;
-       char *final_filter = NULL;
-       uint32 top_rid = 0;
-       uint32 count;
-       uint32 rid;
-
-       pstrcpy(filter, lp_ldap_filter());
-       all_string_sub(filter, "%u", "*", sizeof(pstring));
-
-#if 0
-       asprintf(&final_filter, "(&(%s)(&(rid>=%d)(rid<=%d)))", filter, ldap_state->low_nua_rid, ldap_state->high_nua_rid);
-#else 
-       final_filter = strdup(filter);
-#endif 
-       DEBUG(2, ("ldapsam_get_next_available_nua_rid: searching for:[%s]\n", final_filter));
-
-       rc = ldapsam_search(ldap_state, lp_ldap_suffix(),
-                          LDAP_SCOPE_SUBTREE, final_filter, attr, 0,
-                          &result);
-
-       if (rc != LDAP_SUCCESS) {
-               DEBUG(3, ("LDAP search failed! cannot find base for NUA RIDs: %s\n", ldap_err2string(rc)));
-               DEBUGADD(3, ("Query was: %s, %s\n", lp_ldap_suffix(), final_filter));
-
-               free(final_filter);
-               result = NULL;
-               return 0;
-       }
-       
-       count = ldap_count_entries(ldap_state->ldap_struct, result);
-       DEBUG(2, ("search_top_nua_rid: %d entries in the base!\n", count));
-       
-       if (count == 0) {
-               DEBUG(3, ("LDAP search returned no records, assuming no non-unix-accounts present!: %s\n", ldap_err2string(rc)));
-               DEBUGADD(3, ("Query was: %s, %s\n", lp_ldap_suffix(), final_filter));
-               free(final_filter);
-               ldap_msgfree(result);
-               result = NULL;
-               return ldap_state->low_nua_rid;
-       }
-       
-       free(final_filter);
-       entry = ldap_first_entry(ldap_state->ldap_struct,result);
-
-       top_rid = entry_to_user_rid(ldap_state, entry);
-
-       while ((entry = ldap_next_entry(ldap_state->ldap_struct, entry))) {
-
-               rid = entry_to_user_rid(ldap_state, entry);
-               if (rid > top_rid) {
-                       top_rid = rid;
-               }
-       }
-
-       ldap_msgfree(result);
-
-       if (top_rid < ldap_state->low_nua_rid) 
-               top_rid = ldap_state->low_nua_rid;
-
-       return top_rid;
-}
-
-/**********************************************************************
-Connect to LDAP server and find the next available RID.
-*********************************************************************/
-static uint32 ldapsam_get_next_available_nua_rid(struct ldapsam_privates *ldap_state) {
-       uint32 next_nua_rid;
-       uint32 top_nua_rid;
-
-       top_nua_rid = search_top_nua_rid(ldap_state);
-
-       next_nua_rid = check_nua_rid_is_avail(ldap_state, 
-                                             top_nua_rid);
-       
-       return next_nua_rid;
-}
-
-/**********************************************************************
-Connect to LDAP server for password enumeration
-*********************************************************************/
-static NTSTATUS ldapsam_setsampwent(struct pdb_methods *my_methods, BOOL update)
-{
-       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
-       int rc;
-       pstring filter;
-
-       pstrcpy(filter, lp_ldap_filter());
-       all_string_sub(filter, "%u", "*", sizeof(pstring));
-
-       rc = ldapsam_search(ldap_state, lp_ldap_suffix(),
-                          LDAP_SCOPE_SUBTREE, filter, attr, 0,
-                          &ldap_state->result);
+       attr_list = get_userattr_list(ldap_state->schema_ver);
+       rc = smbldap_search(ldap_state->smbldap_state, suffix, LDAP_SCOPE_SUBTREE, filter, 
+                           attr_list, 0, &ldap_state->result);
+       free_attr_list( attr_list );
 
        if (rc != LDAP_SUCCESS) {
-               DEBUG(0, ("LDAP search failed: %s\n", ldap_err2string(rc)));
-               DEBUG(3, ("Query was: %s, %s\n", lp_ldap_suffix(), filter));
+               DEBUG(0, ("ldapsam_setsampwent: LDAP search failed: %s\n", ldap_err2string(rc)));
+               DEBUG(3, ("ldapsam_setsampwent: Query was: %s, %s\n", suffix, filter));
                ldap_msgfree(ldap_state->result);
                ldap_state->result = NULL;
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       DEBUG(2, ("ldapsam_setsampwent: %d entries in the base!\n",
-               ldap_count_entries(ldap_state->ldap_struct,
-               ldap_state->result)));
+       DEBUG(2, ("ldapsam_setsampwent: %d entries in the base %s\n",
+               ldap_count_entries(ldap_state->smbldap_state->ldap_struct, 
+               ldap_state->result), suffix));
 
-       ldap_state->entry = ldap_first_entry(ldap_state->ldap_struct,
+       ldap_state->entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct,
                                 ldap_state->result);
        ldap_state->index = 0;
 
@@ -1706,8 +1395,9 @@ static NTSTATUS ldapsam_setsampwent(struct pdb_methods *my_methods, BOOL update)
 }
 
 /**********************************************************************
-End enumeration of the LDAP password list 
+ End enumeration of the LDAP password list.
 *********************************************************************/
+
 static void ldapsam_endsampwent(struct pdb_methods *my_methods)
 {
        struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
@@ -1718,18 +1408,15 @@ static void ldapsam_endsampwent(struct pdb_methods *my_methods)
 }
 
 /**********************************************************************
-Get the next entry in the LDAP password database 
+Get the next entry in the LDAP password database.
 *********************************************************************/
+
 static NTSTATUS ldapsam_getsampwent(struct pdb_methods *my_methods, SAM_ACCOUNT *user)
 {
        NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
        struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
        BOOL bret = False;
 
-       /* The rebind proc needs this *HACK*.  We are not multithreaded, so
-          this will work, but it's not nice. */
-       static_ldap_state = ldap_state;
-
        while (!bret) {
                if (!ldap_state->entry)
                        return ret;
@@ -1737,50 +1424,75 @@ static NTSTATUS ldapsam_getsampwent(struct pdb_methods *my_methods, SAM_ACCOUNT
                ldap_state->index++;
                bret = init_sam_from_ldap(ldap_state, user, ldap_state->entry);
                
-               ldap_state->entry = ldap_next_entry(ldap_state->ldap_struct,
+               ldap_state->entry = ldap_next_entry(ldap_state->smbldap_state->ldap_struct,
                                            ldap_state->entry); 
        }
 
        return NT_STATUS_OK;
 }
 
+static void append_attr(const char ***attr_list, const char *new_attr)
+{
+       int i;
+
+       if (new_attr == NULL) {
+               return;
+       }
+
+       for (i=0; (*attr_list)[i] != NULL; i++) {
+               ;
+       }
+
+       (*attr_list) = SMB_REALLOC_ARRAY((*attr_list), const char *,  i+2);
+       SMB_ASSERT((*attr_list) != NULL);
+       (*attr_list)[i] = SMB_STRDUP(new_attr);
+       (*attr_list)[i+1] = NULL;
+}
+
 /**********************************************************************
-Get SAM_ACCOUNT entry from LDAP by username 
+Get SAM_ACCOUNT entry from LDAP by username.
 *********************************************************************/
+
 static NTSTATUS ldapsam_getsampwnam(struct pdb_methods *my_methods, SAM_ACCOUNT *user, const char *sname)
 {
        NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
        struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
-       LDAPMessage *result;
-       LDAPMessage *entry;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
        int count;
+       const char ** attr_list;
+       int rc;
        
-       if (ldapsam_search_one_user_by_name(ldap_state, sname, &result) != LDAP_SUCCESS) {
+       attr_list = get_userattr_list( ldap_state->schema_ver );
+       append_attr(&attr_list, get_userattr_key2string(ldap_state->schema_ver,LDAP_ATTR_MOD_TIMESTAMP));
+       rc = ldapsam_search_suffix_by_name(ldap_state, sname, &result, attr_list);
+       free_attr_list( attr_list );
+
+       if ( rc != LDAP_SUCCESS ) 
                return NT_STATUS_NO_SUCH_USER;
-       }
        
-       count = ldap_count_entries(ldap_state->ldap_struct, result);
+       count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
        
        if (count < 1) {
-               DEBUG(4,
-                     ("We don't find this user [%s] count=%d\n", sname,
-                      count));
+               DEBUG(4, ("ldapsam_getsampwnam: Unable to locate user [%s] count=%d\n", sname, count));
+               ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_USER;
        } else if (count > 1) {
-               DEBUG(1,
-                     ("Duplicate entries for this user [%s] Failing. count=%d\n", sname,
-                      count));
+               DEBUG(1, ("ldapsam_getsampwnam: Duplicate entries for this user [%s] Failing. count=%d\n", sname, count));
+               ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_USER;
        }
 
-       entry = ldap_first_entry(ldap_state->ldap_struct, result);
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
        if (entry) {
                if (!init_sam_from_ldap(ldap_state, user, entry)) {
                        DEBUG(1,("ldapsam_getsampwnam: init_sam_from_ldap failed for user '%s'!\n", sname));
                        ldap_msgfree(result);
                        return NT_STATUS_NO_SUCH_USER;
                }
-               ldap_msgfree(result);
+               pdb_set_backend_private_data(user, result, 
+                                            private_data_free_fn, 
+                                            my_methods, PDB_CHANGED);
                ret = NT_STATUS_OK;
        } else {
                ldap_msgfree(result);
@@ -1788,67 +1500,104 @@ static NTSTATUS ldapsam_getsampwnam(struct pdb_methods *my_methods, SAM_ACCOUNT
        return ret;
 }
 
+static int ldapsam_get_ldap_user_by_sid(struct ldapsam_privates *ldap_state, 
+                                  const DOM_SID *sid, LDAPMessage **result) 
+{
+       int rc = -1;
+       const char ** attr_list;
+       uint32 rid;
+
+       switch ( ldap_state->schema_ver ) {
+               case SCHEMAVER_SAMBASAMACCOUNT:
+                       attr_list = get_userattr_list(ldap_state->schema_ver);
+                       append_attr(&attr_list, get_userattr_key2string(ldap_state->schema_ver,LDAP_ATTR_MOD_TIMESTAMP));
+                       rc = ldapsam_search_suffix_by_sid(ldap_state, sid, result, attr_list);
+                       free_attr_list( attr_list );
+
+                       if ( rc != LDAP_SUCCESS ) 
+                               return rc;
+                       break;
+                       
+               case SCHEMAVER_SAMBAACCOUNT:
+                       if (!sid_peek_check_rid(&ldap_state->domain_sid, sid, &rid)) {
+                               return rc;
+                       }
+               
+                       attr_list = get_userattr_list(ldap_state->schema_ver);
+                       rc = ldapsam_search_suffix_by_rid(ldap_state, rid, result, attr_list );
+                       free_attr_list( attr_list );
+
+                       if ( rc != LDAP_SUCCESS ) 
+                               return rc;
+                       break;
+       }
+       return rc;
+}
+
 /**********************************************************************
-Get SAM_ACCOUNT entry from LDAP by rid 
+ Get SAM_ACCOUNT entry from LDAP by SID.
 *********************************************************************/
-static NTSTATUS ldapsam_getsampwrid(struct pdb_methods *my_methods, SAM_ACCOUNT *user, uint32 rid)
+
+static NTSTATUS ldapsam_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid)
 {
-       NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
-       struct ldapsam_privates *ldap_state = 
-               (struct ldapsam_privates *)my_methods->private_data;
-       LDAPMessage *result;
-       LDAPMessage *entry;
+       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
        int count;
+       int rc;
+       fstring sid_string;
 
-       if (ldapsam_search_one_user_by_rid(ldap_state, rid, &result) != LDAP_SUCCESS) {
+       rc = ldapsam_get_ldap_user_by_sid(ldap_state, 
+                                         sid, &result); 
+       if (rc != LDAP_SUCCESS)
                return NT_STATUS_NO_SUCH_USER;
-       }
 
-       count = ldap_count_entries(ldap_state->ldap_struct, result);
-               
+       count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
+       
        if (count < 1) {
-               DEBUG(4,
-                     ("We don't find this rid [%i] count=%d\n", rid,
+               DEBUG(4, ("ldapsam_getsampwsid: Unable to locate SID [%s] count=%d\n", sid_to_string(sid_string, sid),
                       count));
+               ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_USER;
-       } else if (count > 1) {
-               DEBUG(1,
-                     ("More than one user with rid [%i]. Failing. count=%d\n", rid,
+       }  else if (count > 1) {
+               DEBUG(1, ("ldapsam_getsampwsid: More than one user with SID [%s]. Failing. count=%d\n", sid_to_string(sid_string, sid),
                       count));
+               ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_USER;
        }
 
-       entry = ldap_first_entry(ldap_state->ldap_struct, result);
-       if (entry) {
-               if (!init_sam_from_ldap(ldap_state, user, entry)) {
-                       DEBUG(1,("ldapsam_getsampwrid: init_sam_from_ldap failed!\n"));
-                       ldap_msgfree(result);
-                       return NT_STATUS_NO_SUCH_USER;
-               }
-               ldap_msgfree(result);
-               ret = NT_STATUS_OK;
-       } else {
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
+       if (!entry) {
                ldap_msgfree(result);
+               return NT_STATUS_NO_SUCH_USER;
        }
-       return ret;
-}
 
-static NTSTATUS ldapsam_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid)
-{
-       uint32 rid;
-       if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid))
+       if (!init_sam_from_ldap(ldap_state, user, entry)) {
+               DEBUG(1,("ldapsam_getsampwsid: init_sam_from_ldap failed!\n"));
+               ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_USER;
-       return ldapsam_getsampwrid(my_methods, user, rid);
+       }
+
+       pdb_set_backend_private_data(user, result, 
+                                    private_data_free_fn, 
+                                    my_methods, PDB_CHANGED);
+       return NT_STATUS_OK;
 }      
 
+static BOOL ldapsam_can_pwchange_exop(struct smbldap_state *ldap_state)
+{
+       return smbldap_has_extension(ldap_state, LDAP_EXOP_MODIFY_PASSWD);
+}
+
 /********************************************************************
-Do the actual modification - also change a plaittext passord if 
-it it set.
+ Do the actual modification - also change a plaintext passord if 
+ it it set.
 **********************************************************************/
 
 static NTSTATUS ldapsam_modify_entry(struct pdb_methods *my_methods, 
                                     SAM_ACCOUNT *newpwd, char *dn,
-                                    LDAPMod **mods, int ldap_op, BOOL pdb_add)
+                                    LDAPMod **mods, int ldap_op, 
+                                    BOOL (*need_update)(const SAM_ACCOUNT *, enum pdb_elements))
 {
        struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
        int rc;
@@ -1858,29 +1607,32 @@ static NTSTATUS ldapsam_modify_entry(struct pdb_methods *my_methods,
        }
        
        if (!mods) {
-               DEBUG(5,("mods is empty: nothing to modify\n"));
+               DEBUG(5,("ldapsam_modify_entry: mods is empty: nothing to modify\n"));
                /* may be password change below however */
        } else {
-               switch(ldap_op)
-               {
+               switch(ldap_op) {
                        case LDAP_MOD_ADD: 
-                               make_a_mod(&mods, LDAP_MOD_ADD, "objectclass", "account");
-                               rc = ldapsam_add(ldap_state, dn, mods);
+                               smbldap_set_mod(&mods, LDAP_MOD_ADD, 
+                                               "objectclass", 
+                                               LDAP_OBJ_ACCOUNT);
+                               rc = smbldap_add(ldap_state->smbldap_state, 
+                                                dn, mods);
                                break;
                        case LDAP_MOD_REPLACE: 
-                               rc = ldapsam_modify(ldap_state, dn ,mods);
+                               rc = smbldap_modify(ldap_state->smbldap_state, 
+                                                   dn ,mods);
                                break;
                        default:        
-                               DEBUG(0,("Wrong LDAP operation type: %d!\n", ldap_op));
-                               return NT_STATUS_UNSUCCESSFUL;
+                               DEBUG(0,("ldapsam_modify_entry: Wrong LDAP operation type: %d!\n", 
+                                        ldap_op));
+                               return NT_STATUS_INVALID_PARAMETER;
                }
                
                if (rc!=LDAP_SUCCESS) {
                        char *ld_error = NULL;
-                       ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
+                       ldap_get_option(ldap_state->smbldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
                                        &ld_error);
-                       DEBUG(1,
-                             ("failed to %s user dn= %s with: %s\n\t%s\n",
+                       DEBUG(1, ("ldapsam_modify_entry: Failed to %s user dn= %s with: %s\n\t%s\n",
                               ldap_op == LDAP_MOD_ADD ? "add" : "modify",
                               dn, ldap_err2string(rc),
                               ld_error?ld_error:"unknown"));
@@ -1889,90 +1641,155 @@ static NTSTATUS ldapsam_modify_entry(struct pdb_methods *my_methods,
                }  
        }
        
-#ifdef LDAP_EXOP_X_MODIFY_PASSWD
-       if (!(pdb_get_acct_ctrl(newpwd)&(ACB_WSTRUST|ACB_SVRTRUST|ACB_DOMTRUST))&&
-               (lp_ldap_passwd_sync()!=LDAP_PASSWD_SYNC_OFF)&&
-               need_ldap_mod(pdb_add, newpwd, PDB_PLAINTEXT_PW)&&
-               (pdb_get_plaintext_passwd(newpwd)!=NULL)) {
+       if (!(pdb_get_acct_ctrl(newpwd)&(ACB_WSTRUST|ACB_SVRTRUST|ACB_DOMTRUST)) &&
+                       (lp_ldap_passwd_sync() != LDAP_PASSWD_SYNC_OFF) &&
+                       need_update(newpwd, PDB_PLAINTEXT_PW) &&
+                       (pdb_get_plaintext_passwd(newpwd)!=NULL)) {
                BerElement *ber;
                struct berval *bv;
-               char *retoid;
-               struct berval *retdata;
+               char *retoid = NULL;
+               struct berval *retdata = NULL;
+               char *utf8_password;
+               char *utf8_dn;
+
+               if (!ldap_state->is_nds_ldap) {
+                       if (!ldapsam_can_pwchange_exop(ldap_state->smbldap_state)) {
+                               DEBUG(2, ("ldap password change requested, but LDAP "
+                                         "server does not support it -- ignoring\n"));
+                               return NT_STATUS_OK;
+                       }
+               }
+
+               if (push_utf8_allocate(&utf8_password, pdb_get_plaintext_passwd(newpwd)) == (size_t)-1) {
+                       return NT_STATUS_NO_MEMORY;
+               }
+
+               if (push_utf8_allocate(&utf8_dn, dn) == (size_t)-1) {
+                       return NT_STATUS_NO_MEMORY;
+               }
 
                if ((ber = ber_alloc_t(LBER_USE_DER))==NULL) {
                        DEBUG(0,("ber_alloc_t returns NULL\n"));
+                       SAFE_FREE(utf8_password);
                        return NT_STATUS_UNSUCCESSFUL;
                }
+
                ber_printf (ber, "{");
-               ber_printf (ber, "ts", LDAP_TAG_EXOP_X_MODIFY_PASSWD_ID,dn);
-               ber_printf (ber, "ts", LDAP_TAG_EXOP_X_MODIFY_PASSWD_NEW, pdb_get_plaintext_passwd(newpwd));
+               ber_printf (ber, "ts", LDAP_TAG_EXOP_MODIFY_PASSWD_ID, utf8_dn);
+               ber_printf (ber, "ts", LDAP_TAG_EXOP_MODIFY_PASSWD_NEW, utf8_password);
                ber_printf (ber, "N}");
 
                if ((rc = ber_flatten (ber, &bv))<0) {
-                       DEBUG(0,("ber_flatten returns a value <0\n"));
+                       DEBUG(0,("ldapsam_modify_entry: ber_flatten returns a value <0\n"));
+                       ber_free(ber,1);
+                       SAFE_FREE(utf8_dn);
+                       SAFE_FREE(utf8_password);
                        return NT_STATUS_UNSUCCESSFUL;
                }
                
-               ber_free(ber,1);
+               SAFE_FREE(utf8_dn);
+               SAFE_FREE(utf8_password);
+               ber_free(ber, 1);
+
+               if (!ldap_state->is_nds_ldap) {
+                       rc = smbldap_extended_operation(ldap_state->smbldap_state, 
+                                                       LDAP_EXOP_MODIFY_PASSWD,
+                                                       bv, NULL, NULL, &retoid, 
+                                                       &retdata);
+               } else {
+                       rc = pdb_nds_set_password(ldap_state->smbldap_state, dn,
+                                                       pdb_get_plaintext_passwd(newpwd));
+               }
+               if (rc != LDAP_SUCCESS) {
+                       char *ld_error = NULL;
+
+                       if (rc == LDAP_OBJECT_CLASS_VIOLATION) {
+                               DEBUG(3, ("Could not set userPassword "
+                                         "attribute due to an objectClass "
+                                         "violation -- ignoring\n"));
+                               ber_bvfree(bv);
+                               return NT_STATUS_OK;
+                       }
 
-               if ((rc = ldapsam_extended_operation(ldap_state, LDAP_EXOP_X_MODIFY_PASSWD,
-                                                   bv, NULL, NULL, &retoid, &retdata))!=LDAP_SUCCESS) {
-                       DEBUG(0,("LDAP Password could not be changed for user %s: %s\n",
-                               pdb_get_username(newpwd),ldap_err2string(rc)));
+                       ldap_get_option(ldap_state->smbldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
+                                       &ld_error);
+                       DEBUG(0,("ldapsam_modify_entry: LDAP Password could not be changed for user %s: %s\n\t%s\n",
+                               pdb_get_username(newpwd), ldap_err2string(rc), ld_error?ld_error:"unknown"));
+                       SAFE_FREE(ld_error);
+                       ber_bvfree(bv);
+                       return NT_STATUS_UNSUCCESSFUL;
                } else {
-                       DEBUG(3,("LDAP Password changed for user %s\n",pdb_get_username(newpwd)));
-    
-                       ber_bvfree(retdata);
-                       ber_memfree(retoid);
+                       DEBUG(3,("ldapsam_modify_entry: LDAP Password changed for user %s\n",pdb_get_username(newpwd)));
+#ifdef DEBUG_PASSWORD
+                       DEBUG(100,("ldapsam_modify_entry: LDAP Password changed to %s\n",pdb_get_plaintext_passwd(newpwd)));
+#endif    
+                       if (retdata)
+                               ber_bvfree(retdata);
+                       if (retoid)
+                               ber_memfree(retoid);
                }
                ber_bvfree(bv);
        }
-#else
-       DEBUG(10,("LDAP PASSWORD SYNC is not supported!\n"));
-#endif /* LDAP_EXOP_X_MODIFY_PASSWD */
        return NT_STATUS_OK;
 }
 
 /**********************************************************************
-Delete entry from LDAP for username 
+ Delete entry from LDAP for username.
 *********************************************************************/
+
 static NTSTATUS ldapsam_delete_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT * sam_acct)
 {
        struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
        const char *sname;
        int rc;
-       LDAPMessage *result;
+       LDAPMessage *result = NULL;
        NTSTATUS ret;
-       const char *sam_user_attrs[] =
-       { "lmPassword", "ntPassword", "pwdLastSet", "logonTime", "logoffTime",
-         "kickoffTime", "pwdCanChange", "pwdMustChange", "acctFlags",
-         "displayName", "smbHome", "homeDrive", "scriptPath", "profilePath",
-         "userWorkstations", "primaryGroupID", "domain", "rid", NULL };
+       const char **attr_list;
+       fstring objclass;
 
        if (!sam_acct) {
-               DEBUG(0, ("sam_acct was NULL!\n"));
+               DEBUG(0, ("ldapsam_delete_sam_account: sam_acct was NULL!\n"));
                return NT_STATUS_INVALID_PARAMETER;
        }
 
        sname = pdb_get_username(sam_acct);
 
-       DEBUG (3, ("Deleting user %s from LDAP.\n", sname));
+       DEBUG (3, ("ldapsam_delete_sam_account: Deleting user %s from LDAP.\n", sname));
 
-       rc = ldapsam_search_one_user_by_name(ldap_state, sname, &result);
-       if (rc != LDAP_SUCCESS) {
+       attr_list= get_userattr_delete_list( ldap_state->schema_ver );
+       rc = ldapsam_search_suffix_by_name(ldap_state, sname, &result, attr_list);
+
+       if (rc != LDAP_SUCCESS)  {
+               free_attr_list( attr_list );
                return NT_STATUS_NO_SUCH_USER;
        }
+       
+       switch ( ldap_state->schema_ver ) {
+               case SCHEMAVER_SAMBASAMACCOUNT:
+                       fstrcpy( objclass, LDAP_OBJ_SAMBASAMACCOUNT );
+                       break;
+                       
+               case SCHEMAVER_SAMBAACCOUNT:
+                       fstrcpy( objclass, LDAP_OBJ_SAMBAACCOUNT );
+                       break;
+               default:
+                       fstrcpy( objclass, "UNKNOWN" );
+                       DEBUG(0,("ldapsam_delete_sam_account: Unknown schema version specified!\n"));
+                               break;
+       }
 
-       ret = ldapsam_delete_entry(ldap_state, result, "sambaAccount",
-                                  sam_user_attrs);
+       ret = ldapsam_delete_entry(ldap_state, result, objclass, attr_list );
        ldap_msgfree(result);
+       free_attr_list( attr_list );
+
        return ret;
 }
 
 /**********************************************************************
 Helper function to determine for update_sam_account whether
 we need LDAP modification.
+ Helper function to determine for update_sam_account whether
+ we need LDAP modification.
 *********************************************************************/
+
 static BOOL element_is_changed(const SAM_ACCOUNT *sampass,
                               enum pdb_elements element)
 {
@@ -1980,70 +1797,84 @@ static BOOL element_is_changed(const SAM_ACCOUNT *sampass,
 }
 
 /**********************************************************************
-Update SAM_ACCOUNT 
+ Update SAM_ACCOUNT.
 *********************************************************************/
+
 static NTSTATUS ldapsam_update_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT * newpwd)
 {
        NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
        struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
-       int rc;
+       int rc = 0;
        char *dn;
-       LDAPMessage *result;
-       LDAPMessage *entry;
-       LDAPMod **mods;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
+       LDAPMod **mods = NULL;
+       const char **attr_list;
 
-       rc = ldapsam_search_one_user_by_name(ldap_state, pdb_get_username(newpwd), &result);
-       if (rc != LDAP_SUCCESS) {
+       result = pdb_get_backend_private_data(newpwd, my_methods);
+       if (!result) {
+               attr_list = get_userattr_list(ldap_state->schema_ver);
+               rc = ldapsam_search_suffix_by_name(ldap_state, pdb_get_username(newpwd), &result, attr_list );
+               free_attr_list( attr_list );
+               if (rc != LDAP_SUCCESS) {
+                       return NT_STATUS_UNSUCCESSFUL;
+               }
+               pdb_set_backend_private_data(newpwd, result, private_data_free_fn, my_methods, PDB_CHANGED);
+       }
+
+       if (ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result) == 0) {
+               DEBUG(0, ("ldapsam_update_sam_account: No user to modify!\n"));
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       if (ldap_count_entries(ldap_state->ldap_struct, result) == 0) {
-               DEBUG(0, ("No user to modify!\n"));
-               ldap_msgfree(result);
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
+       dn = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
+       if (!dn) {
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       entry = ldap_first_entry(ldap_state->ldap_struct, result);
-       dn = ldap_get_dn(ldap_state->ldap_struct, entry);
+       DEBUG(4, ("ldapsam_update_sam_account: user %s to be modified has dn: %s\n", pdb_get_username(newpwd), dn));
 
        if (!init_ldap_from_sam(ldap_state, entry, &mods, newpwd,
                                element_is_changed)) {
                DEBUG(0, ("ldapsam_update_sam_account: init_ldap_from_sam failed!\n"));
-               ldap_msgfree(result);
+               SAFE_FREE(dn);
+               if (mods != NULL)
+                       ldap_mods_free(mods,True);
                return NT_STATUS_UNSUCCESSFUL;
        }
        
-        ldap_msgfree(result);
-       
        if (mods == NULL) {
-               DEBUG(4,("mods is empty: nothing to update for user: %s\n",
+               DEBUG(4,("ldapsam_update_sam_account: mods is empty: nothing to update for user: %s\n",
                         pdb_get_username(newpwd)));
-               ldap_mods_free(mods, 1);
+               SAFE_FREE(dn);
                return NT_STATUS_OK;
        }
        
-       ret = ldapsam_modify_entry(my_methods,newpwd,dn,mods,LDAP_MOD_REPLACE, False);
-       ldap_mods_free(mods,1);
+       ret = ldapsam_modify_entry(my_methods,newpwd,dn,mods,LDAP_MOD_REPLACE, element_is_changed);
+       ldap_mods_free(mods,True);
+       SAFE_FREE(dn);
 
        if (!NT_STATUS_IS_OK(ret)) {
                char *ld_error = NULL;
-               ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
                                &ld_error);
-               DEBUG(0,("failed to modify user with uid = %s, error: %s (%s)\n",
+               DEBUG(0,("ldapsam_update_sam_account: failed to modify user with uid = %s, error: %s (%s)\n",
                         pdb_get_username(newpwd), ld_error?ld_error:"(unknwon)", ldap_err2string(rc)));
                SAFE_FREE(ld_error);
                return ret;
        }
 
-       DEBUG(2, ("successfully modified uid = %s in the LDAP database\n",
+       DEBUG(2, ("ldapsam_update_sam_account: successfully modified uid = %s in the LDAP database\n",
                  pdb_get_username(newpwd)));
        return NT_STATUS_OK;
 }
 
 /**********************************************************************
-  Helper function to determine for update_sam_account whether
-  we need LDAP modification.
-*********************************************************************/
+ Helper function to determine for update_sam_account whether
+ we need LDAP modification.
+ *********************************************************************/
+
 static BOOL element_is_set_or_changed(const SAM_ACCOUNT *sampass,
                                      enum pdb_elements element)
 {
@@ -2052,50 +1883,87 @@ static BOOL element_is_set_or_changed(const SAM_ACCOUNT *sampass,
 }
 
 /**********************************************************************
-Add SAM_ACCOUNT to LDAP 
+ Add SAM_ACCOUNT to LDAP.
 *********************************************************************/
+
 static NTSTATUS ldapsam_add_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT * newpwd)
 {
        NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
        struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
        int rc;
-       pstring filter;
-       LDAPMessage *result = NULL;
-       LDAPMessage *entry  = NULL;
-       pstring dn;
-       LDAPMod **mods = NULL;
-       int             ldap_op;
+       LDAPMessage     *result = NULL;
+       LDAPMessage     *entry  = NULL;
+       pstring         dn;
+       LDAPMod         **mods = NULL;
+       int             ldap_op = LDAP_MOD_REPLACE;
        uint32          num_result;
-       
-       const char *username = pdb_get_username(newpwd);
+       const char      **attr_list;
+       char            *escape_user;
+       const char      *username = pdb_get_username(newpwd);
+       const DOM_SID   *sid = pdb_get_user_sid(newpwd);
+       pstring         filter;
+       fstring         sid_string;
+
        if (!username || !*username) {
-               DEBUG(0, ("Cannot add user without a username!\n"));
+               DEBUG(0, ("ldapsam_add_sam_account: Cannot add user without a username!\n"));
                return NT_STATUS_INVALID_PARAMETER;
        }
 
-       rc = ldapsam_search_one_user_by_name (ldap_state, username, &result);
+       /* free this list after the second search or in case we exit on failure */
+       attr_list = get_userattr_list(ldap_state->schema_ver);
+
+       rc = ldapsam_search_suffix_by_name (ldap_state, username, &result, attr_list);
+
        if (rc != LDAP_SUCCESS) {
+               free_attr_list( attr_list );
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       if (ldap_count_entries(ldap_state->ldap_struct, result) != 0) {
-               DEBUG(0,("User '%s' already in the base, with samba properties\n", 
+       if (ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result) != 0) {
+               DEBUG(0,("ldapsam_add_sam_account: User '%s' already in the base, with samba attributes\n", 
                         username));
                ldap_msgfree(result);
+               free_attr_list( attr_list );
                return NT_STATUS_UNSUCCESSFUL;
        }
        ldap_msgfree(result);
+       result = NULL;
+
+       if (element_is_set_or_changed(newpwd, PDB_USERSID)) {
+               rc = ldapsam_get_ldap_user_by_sid(ldap_state, 
+                                                 sid, &result); 
+               if (rc == LDAP_SUCCESS) {
+                       if (ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result) != 0) {
+                               DEBUG(0,("ldapsam_add_sam_account: SID '%s' already in the base, with samba attributes\n", 
+                                        sid_to_string(sid_string, sid)));
+                               free_attr_list( attr_list );
+                               ldap_msgfree(result);
+                               return NT_STATUS_UNSUCCESSFUL;
+                       }
+                       ldap_msgfree(result);
+               }
+       }
 
-       slprintf (filter, sizeof (filter) - 1, "uid=%s", username);
-       rc = ldapsam_search_one_user(ldap_state, filter, &result);
-       if (rc != LDAP_SUCCESS) {
+       /* does the entry already exist but without a samba attributes?
+          we need to return the samba attributes here */
+          
+       escape_user = escape_ldap_string_alloc( username );
+       pstrcpy( filter, "(uid=%u)" );
+       all_string_sub( filter, "%u", escape_user, sizeof(filter) );
+       SAFE_FREE( escape_user );
+
+       rc = smbldap_search_suffix(ldap_state->smbldap_state, 
+                                  filter, attr_list, &result);
+       if ( rc != LDAP_SUCCESS ) {
+               free_attr_list( attr_list );
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       num_result = ldap_count_entries(ldap_state->ldap_struct, result);
+       num_result = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
        
        if (num_result > 1) {
-               DEBUG (0, ("More than one user with that uid exists: bailing out!\n"));
+               DEBUG (0, ("ldapsam_add_sam_account: More than one user with that uid exists: bailing out!\n"));
+               free_attr_list( attr_list );
                ldap_msgfree(result);
                return NT_STATUS_UNSUCCESSFUL;
        }
@@ -2104,170 +1972,229 @@ static NTSTATUS ldapsam_add_sam_account(struct pdb_methods *my_methods, SAM_ACCO
        if (num_result == 1) {
                char *tmp;
                
-               DEBUG(3,("User exists without samba properties: adding them\n"));
+               DEBUG(3,("ldapsam_add_sam_account: User exists without samba attributes: adding them\n"));
                ldap_op = LDAP_MOD_REPLACE;
-               entry = ldap_first_entry (ldap_state->ldap_struct, result);
-               tmp = ldap_get_dn (ldap_state->ldap_struct, entry);
+               entry = ldap_first_entry (ldap_state->smbldap_state->ldap_struct, result);
+               tmp = smbldap_get_dn (ldap_state->smbldap_state->ldap_struct, entry);
+               if (!tmp) {
+                       free_attr_list( attr_list );
+                       ldap_msgfree(result);
+                       return NT_STATUS_UNSUCCESSFUL;
+               }
                slprintf (dn, sizeof (dn) - 1, "%s", tmp);
-               ldap_memfree (tmp);
-       } else {
+               SAFE_FREE(tmp);
+
+       } else if (ldap_state->schema_ver == SCHEMAVER_SAMBASAMACCOUNT) {
+
+               /* There might be a SID for this account already - say an idmap entry */
+
+               pstr_sprintf(filter, "(&(%s=%s)(|(objectClass=%s)(objectClass=%s)))", 
+                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID),
+                        sid_to_string(sid_string, sid),
+                        LDAP_OBJ_IDMAP_ENTRY,
+                        LDAP_OBJ_SID_ENTRY);
+               
+               /* free old result before doing a new search */
+               if (result != NULL) {
+                       ldap_msgfree(result);
+                       result = NULL;
+               }
+               rc = smbldap_search_suffix(ldap_state->smbldap_state, 
+                                          filter, attr_list, &result);
+                       
+               if ( rc != LDAP_SUCCESS ) {
+                       free_attr_list( attr_list );
+                       return NT_STATUS_UNSUCCESSFUL;
+               }
+               
+               num_result = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
+               
+               if (num_result > 1) {
+                       DEBUG (0, ("ldapsam_add_sam_account: More than one user with that uid exists: bailing out!\n"));
+                       free_attr_list( attr_list );
+                       ldap_msgfree(result);
+                       return NT_STATUS_UNSUCCESSFUL;
+               }
+               
+               /* Check if we need to update an existing entry */
+               if (num_result == 1) {
+                       char *tmp;
+                       
+                       DEBUG(3,("ldapsam_add_sam_account: User exists without samba attributes: adding them\n"));
+                       ldap_op = LDAP_MOD_REPLACE;
+                       entry = ldap_first_entry (ldap_state->smbldap_state->ldap_struct, result);
+                       tmp = smbldap_get_dn (ldap_state->smbldap_state->ldap_struct, entry);
+                       if (!tmp) {
+                               free_attr_list( attr_list );
+                               ldap_msgfree(result);
+                               return NT_STATUS_UNSUCCESSFUL;
+                       }
+                       slprintf (dn, sizeof (dn) - 1, "%s", tmp);
+                       SAFE_FREE(tmp);
+               }
+       }
+       
+       free_attr_list( attr_list );
+
+       if (num_result == 0) {
                /* Check if we need to add an entry */
-               DEBUG(3,("Adding new user\n"));
+               DEBUG(3,("ldapsam_add_sam_account: Adding new user\n"));
                ldap_op = LDAP_MOD_ADD;
                if (username[strlen(username)-1] == '$') {
-                        slprintf (dn, sizeof (dn) - 1, "uid=%s,%s", username, lp_ldap_machine_suffix ());
-                } else {
-                        slprintf (dn, sizeof (dn) - 1, "uid=%s,%s", username, lp_ldap_user_suffix ());
-                }
+                       slprintf (dn, sizeof (dn) - 1, "uid=%s,%s", username, lp_ldap_machine_suffix ());
+               } else {
+                       slprintf (dn, sizeof (dn) - 1, "uid=%s,%s", username, lp_ldap_user_suffix ());
+               }
        }
 
        if (!init_ldap_from_sam(ldap_state, entry, &mods, newpwd,
                                element_is_set_or_changed)) {
                DEBUG(0, ("ldapsam_add_sam_account: init_ldap_from_sam failed!\n"));
                ldap_msgfree(result);
+               if (mods != NULL)
+                       ldap_mods_free(mods,True);
                return NT_STATUS_UNSUCCESSFUL;          
        }
        
        ldap_msgfree(result);
 
        if (mods == NULL) {
-               DEBUG(0,("mods is empty: nothing to add for user: %s\n",pdb_get_username(newpwd)));
+               DEBUG(0,("ldapsam_add_sam_account: mods is empty: nothing to add for user: %s\n",pdb_get_username(newpwd)));
                return NT_STATUS_UNSUCCESSFUL;
        }
-       
-       make_a_mod(&mods, LDAP_MOD_ADD, "objectclass", "sambaAccount");
+       switch ( ldap_state->schema_ver ) {
+               case SCHEMAVER_SAMBAACCOUNT:
+                       smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_SAMBAACCOUNT);
+                       break;
+               case SCHEMAVER_SAMBASAMACCOUNT:
+                       smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectclass", LDAP_OBJ_SAMBASAMACCOUNT);
+                       break;
+               default:
+                       DEBUG(0,("ldapsam_add_sam_account: invalid schema version specified\n"));
+                       break;
+       }
 
-       ret = ldapsam_modify_entry(my_methods,newpwd,dn,mods,ldap_op, True);
-       if (NT_STATUS_IS_ERR(ret)) {
-               DEBUG(0,("failed to modify/add user with uid = %s (dn = %s)\n",
+       ret = ldapsam_modify_entry(my_methods,newpwd,dn,mods,ldap_op, element_is_set_or_changed);
+       if (!NT_STATUS_IS_OK(ret)) {
+               DEBUG(0,("ldapsam_add_sam_account: failed to modify/add user with uid = %s (dn = %s)\n",
                         pdb_get_username(newpwd),dn));
-               ldap_mods_free(mods,1);
+               ldap_mods_free(mods, True);
                return ret;
        }
 
-       DEBUG(2,("added: uid = %s in the LDAP database\n", pdb_get_username(newpwd)));
-       ldap_mods_free(mods, 1);
+       DEBUG(2,("ldapsam_add_sam_account: added: uid == %s in the LDAP database\n", pdb_get_username(newpwd)));
+       ldap_mods_free(mods, True);
+       
        return NT_STATUS_OK;
 }
 
-static void free_private_data(void **vp) 
-{
-       struct ldapsam_privates **ldap_state = (struct ldapsam_privates **)vp;
-
-       ldapsam_close(*ldap_state);
-
-       if ((*ldap_state)->bind_secret) {
-               memset((*ldap_state)->bind_secret, '\0', strlen((*ldap_state)->bind_secret));
-       }
-
-       ldapsam_close(*ldap_state);
-               
-       SAFE_FREE((*ldap_state)->bind_dn);
-       SAFE_FREE((*ldap_state)->bind_secret);
-
-       *ldap_state = NULL;
-
-       /* No need to free any further, as it is talloc()ed */
-}
+/**********************************************************************
+ *********************************************************************/
 
-static const char *group_attr[] = {"cn", "ntSid", "ntGroupType",
-                                  "gidNumber",
-                                  "displayName", "description",
-                                  NULL };
-                                  
 static int ldapsam_search_one_group (struct ldapsam_privates *ldap_state,
                                     const char *filter,
                                     LDAPMessage ** result)
 {
        int scope = LDAP_SCOPE_SUBTREE;
        int rc;
+       const char **attr_list;
 
-       DEBUG(2, ("ldapsam_search_one_group: searching for:[%s]\n", filter));
-
-       rc = ldapsam_search(ldap_state, lp_ldap_suffix (), scope,
-                           filter, group_attr, 0, result);
+       attr_list = get_attr_list(groupmap_attr_list);
+       rc = smbldap_search(ldap_state->smbldap_state, 
+                           lp_ldap_group_suffix (), scope,
+                           filter, attr_list, 0, result);
+       free_attr_list( attr_list );
 
        if (rc != LDAP_SUCCESS) {
                char *ld_error = NULL;
-               ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
                                &ld_error);
                DEBUG(0, ("ldapsam_search_one_group: "
-                         "Problem during the LDAP search: LDAP error: %s (%s)",
+                         "Problem during the LDAP search: LDAP error: %s (%s)\n",
                          ld_error?ld_error:"(unknown)", ldap_err2string(rc)));
-               DEBUG(3, ("ldapsam_search_one_group: Query was: %s, %s\n",
-                         lp_ldap_suffix(), filter));
+               DEBUGADD(3, ("ldapsam_search_one_group: Query was: %s, %s\n",
+                         lp_ldap_group_suffix(), filter));
                SAFE_FREE(ld_error);
        }
 
        return rc;
 }
 
+/**********************************************************************
+ *********************************************************************/
+
 static BOOL init_group_from_ldap(struct ldapsam_privates *ldap_state,
                                 GROUP_MAP *map, LDAPMessage *entry)
 {
        pstring temp;
 
        if (ldap_state == NULL || map == NULL || entry == NULL ||
-           ldap_state->ldap_struct == NULL) {
+                       ldap_state->smbldap_state->ldap_struct == NULL) {
                DEBUG(0, ("init_group_from_ldap: NULL parameters found!\n"));
                return False;
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "gidNumber",
-                                 temp)) {
-               DEBUG(0, ("Mandatory attribute gidNumber not found\n"));
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GIDNUMBER), temp)) {
+               DEBUG(0, ("init_group_from_ldap: Mandatory attribute %s not found\n", 
+                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GIDNUMBER)));
                return False;
        }
-       DEBUG(2, ("Entry found for group: %s\n", temp));
+       DEBUG(2, ("init_group_from_ldap: Entry found for group: %s\n", temp));
 
        map->gid = (gid_t)atol(temp);
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "ntSid",
-                                 temp)) {
-               DEBUG(0, ("Mandatory attribute ntSid not found\n"));
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GROUP_SID), temp)) {
+               DEBUG(0, ("init_group_from_ldap: Mandatory attribute %s not found\n",
+                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GROUP_SID)));
+               return False;
+       }
+       
+       if (!string_to_sid(&map->sid, temp)) {
+               DEBUG(1, ("SID string [%s] could not be read as a valid SID\n", temp));
                return False;
        }
-       string_to_sid(&map->sid, temp);
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "ntGroupType",
-                                 temp)) {
-               DEBUG(0, ("Mandatory attribute ntGroupType not found\n"));
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GROUP_TYPE), temp)) {
+               DEBUG(0, ("init_group_from_ldap: Mandatory attribute %s not found\n",
+                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GROUP_TYPE)));
                return False;
        }
-       map->sid_name_use = (uint32)atol(temp);
+       map->sid_name_use = (enum SID_NAME_USE)atol(temp);
 
        if ((map->sid_name_use < SID_NAME_USER) ||
-           (map->sid_name_use > SID_NAME_UNKNOWN)) {
-               DEBUG(0, ("Unknown Group type: %d\n", map->sid_name_use));
+                       (map->sid_name_use > SID_NAME_UNKNOWN)) {
+               DEBUG(0, ("init_group_from_ldap: Unknown Group type: %d\n", map->sid_name_use));
                return False;
        }
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "displayName",
-                                 temp)) {
-               DEBUG(3, ("Attribute displayName not found\n"));
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_DISPLAY_NAME), temp)) {
                temp[0] = '\0';
-               if (!get_single_attribute(ldap_state->ldap_struct, entry, "cn",
-                                         temp)) {
-                       DEBUG(0, ("Attributes cn not found either "
-                                 "for gidNumber(%i)\n",map->gid));
+               if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_CN), temp)) 
+               {
+                       DEBUG(0, ("init_group_from_ldap: Attributes cn not found either \
+for gidNumber(%lu)\n",(unsigned long)map->gid));
                        return False;
                }
        }
        fstrcpy(map->nt_name, temp);
 
-       if (!get_single_attribute(ldap_state->ldap_struct, entry, "description",
-                                 temp)) {
-               DEBUG(3, ("Attribute description not found\n"));
+       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_DESC), temp)) {
                temp[0] = '\0';
        }
        fstrcpy(map->comment, temp);
 
-       map->systemaccount = 0;
-       init_privilege(&map->priv_set);
-
        return True;
 }
 
+/**********************************************************************
+ *********************************************************************/
+
 static BOOL init_ldap_from_group(LDAP *ldap_struct,
                                 LDAPMessage *existing,
                                 LDAPMod ***mods,
@@ -2283,24 +2210,32 @@ static BOOL init_ldap_from_group(LDAP *ldap_struct,
        *mods = NULL;
 
        sid_to_string(tmp, &map->sid);
-       make_ldap_mod(ldap_struct, existing, mods, "ntSid", tmp);
-       snprintf(tmp, sizeof(tmp)-1, "%i", map->sid_name_use);
-       make_ldap_mod(ldap_struct, existing, mods, "ntGroupType", tmp);
 
-       make_ldap_mod(ldap_struct, existing, mods, "displayName", map->nt_name);
-       make_ldap_mod(ldap_struct, existing, mods, "description", map->comment);
+       smbldap_make_mod(ldap_struct, existing, mods, 
+               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GROUP_SID), tmp);
+       pstr_sprintf(tmp, "%i", map->sid_name_use);
+       smbldap_make_mod(ldap_struct, existing, mods, 
+               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GROUP_TYPE), tmp);
+
+       smbldap_make_mod(ldap_struct, existing, mods, 
+               get_attr_key2string( groupmap_attr_list, LDAP_ATTR_DISPLAY_NAME), map->nt_name);
+       smbldap_make_mod(ldap_struct, existing, mods, 
+               get_attr_key2string( groupmap_attr_list, LDAP_ATTR_DESC), map->comment);
 
        return True;
 }
 
+/**********************************************************************
+ *********************************************************************/
+
 static NTSTATUS ldapsam_getgroup(struct pdb_methods *methods,
                                 const char *filter,
                                 GROUP_MAP *map)
 {
        struct ldapsam_privates *ldap_state =
                (struct ldapsam_privates *)methods->private_data;
-       LDAPMessage *result;
-       LDAPMessage *entry;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
        int count;
 
        if (ldapsam_search_one_group(ldap_state, filter, &result)
@@ -2308,20 +2243,22 @@ static NTSTATUS ldapsam_getgroup(struct pdb_methods *methods,
                return NT_STATUS_NO_SUCH_GROUP;
        }
 
-       count = ldap_count_entries(ldap_state->ldap_struct, result);
+       count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
 
        if (count < 1) {
-               DEBUG(4, ("Did not find group for filter %s\n", filter));
+               DEBUG(4, ("ldapsam_getgroup: Did not find group\n"));
+               ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_GROUP;
        }
 
        if (count > 1) {
-               DEBUG(1, ("Duplicate entries for filter %s: count=%d\n",
+               DEBUG(1, ("ldapsam_getgroup: Duplicate entries for filter %s: count=%d\n",
                          filter, count));
+               ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_GROUP;
        }
 
-       entry = ldap_first_entry(ldap_state->ldap_struct, result);
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
 
        if (!entry) {
                ldap_msgfree(result);
@@ -2329,7 +2266,7 @@ static NTSTATUS ldapsam_getgroup(struct pdb_methods *methods,
        }
 
        if (!init_group_from_ldap(ldap_state, map, entry)) {
-               DEBUG(1, ("init_group_from_ldap failed for group filter %s\n",
+               DEBUG(1, ("ldapsam_getgroup: init_group_from_ldap failed for group filter %s\n",
                          filter));
                ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_GROUP;
@@ -2339,56 +2276,419 @@ static NTSTATUS ldapsam_getgroup(struct pdb_methods *methods,
        return NT_STATUS_OK;
 }
 
+/**********************************************************************
+ *********************************************************************/
+
 static NTSTATUS ldapsam_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
-                                DOM_SID sid, BOOL with_priv)
+                                DOM_SID sid)
 {
        pstring filter;
 
-       snprintf(filter, sizeof(filter)-1,
-                "(&(objectClass=sambaGroupMapping)(ntSid=%s))",
-                sid_string_static(&sid));
+       pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))",
+               LDAP_OBJ_GROUPMAP, 
+               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GROUP_SID),
+               sid_string_static(&sid));
 
        return ldapsam_getgroup(methods, filter, map);
 }
 
+/**********************************************************************
+ *********************************************************************/
+
 static NTSTATUS ldapsam_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
-                                gid_t gid, BOOL with_priv)
+                                gid_t gid)
 {
        pstring filter;
 
-       snprintf(filter, sizeof(filter)-1,
-                "(&(objectClass=sambaGroupMapping)(gidNumber=%d))",
-                gid);
+       pstr_sprintf(filter, "(&(objectClass=%s)(%s=%lu))",
+               LDAP_OBJ_GROUPMAP,
+               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GIDNUMBER),
+               (unsigned long)gid);
 
        return ldapsam_getgroup(methods, filter, map);
 }
 
+/**********************************************************************
+ *********************************************************************/
+
 static NTSTATUS ldapsam_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
-                                char *name, BOOL with_priv)
+                                const char *name)
 {
        pstring filter;
+       char *escape_name = escape_ldap_string_alloc(name);
+
+       if (!escape_name) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
-       /* TODO: Escaping of name? */
+       pstr_sprintf(filter, "(&(objectClass=%s)(|(%s=%s)(%s=%s)))",
+               LDAP_OBJ_GROUPMAP,
+               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_DISPLAY_NAME), escape_name,
+               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_CN), escape_name);
 
-       snprintf(filter, sizeof(filter)-1,
-                "(&(objectClass=sambaGroupMapping)(|(displayName=%s)(cn=%s)))",
-                name, name);
+       SAFE_FREE(escape_name);
 
        return ldapsam_getgroup(methods, filter, map);
 }
 
+static void add_rid_to_array_unique(TALLOC_CTX *mem_ctx,
+                                   uint32 rid, uint32 **rids, int *num)
+{
+       int i;
+
+       for (i=0; i<*num; i++) {
+               if ((*rids)[i] == rid)
+                       return;
+       }
+       
+       *rids = TALLOC_REALLOC_ARRAY(mem_ctx, *rids, uint32, *num+1);
+
+       if (*rids == NULL)
+               return;
+
+       (*rids)[*num] = rid;
+       *num += 1;
+}
+
+static BOOL ldapsam_extract_rid_from_entry(LDAP *ldap_struct,
+                                          LDAPMessage *entry,
+                                          const DOM_SID *domain_sid,
+                                          uint32 *rid)
+{
+       fstring str;
+       DOM_SID sid;
+
+       if (!smbldap_get_single_attribute(ldap_struct, entry, "sambaSID",
+                                         str, sizeof(str)-1)) {
+               DEBUG(10, ("Could not find sambaSID attribute\n"));
+               return False;
+       }
+
+       if (!string_to_sid(&sid, str)) {
+               DEBUG(10, ("Could not convert string %s to sid\n", str));
+               return False;
+       }
+
+       if (sid_compare_domain(&sid, domain_sid) != 0) {
+               DEBUG(10, ("SID %s is not in expected domain %s\n",
+                          str, sid_string_static(domain_sid)));
+               return False;
+       }
+
+       if (!sid_peek_rid(&sid, rid)) {
+               DEBUG(10, ("Could not peek into RID\n"));
+               return False;
+       }
+
+       return True;
+}
+
+static NTSTATUS ldapsam_enum_group_members(struct pdb_methods *methods,
+                                          TALLOC_CTX *mem_ctx,
+                                          const DOM_SID *group,
+                                          uint32 **member_rids,
+                                          int *num_members)
+{
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+       struct smbldap_state *conn = ldap_state->smbldap_state;
+       pstring filter;
+       int rc, count;
+       LDAPMessage *msg = NULL;
+       LDAPMessage *entry;
+       char **values = NULL;
+       char **memberuid;
+       char *sid_filter = NULL;
+       char *tmp;
+       NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+
+       if (!lp_parm_bool(-1, "ldapsam", "trusted", False))
+               return pdb_default_enum_group_members(methods, mem_ctx, group,
+                                                     member_rids,
+                                                     num_members);
+
+       *member_rids = NULL;
+       *num_members = 0;
+
+       pstr_sprintf(filter,
+                    "(&(objectClass=sambaSamAccount)"
+                    "(sambaPrimaryGroupSid=%s))",
+                    sid_string_static(group));
+
+       {
+               const char *attrs[] = { "sambaSID", NULL };
+               rc = smbldap_search(conn, lp_ldap_user_suffix(),
+                                   LDAP_SCOPE_SUBTREE, filter, attrs, 0,
+                                   &msg);
+       }
+
+       if (rc != LDAP_SUCCESS)
+               goto done;
+
+       for (entry = ldap_first_entry(conn->ldap_struct, msg);
+            entry != NULL;
+            entry = ldap_next_entry(conn->ldap_struct, entry))
+       {
+               uint32 rid;
+
+               if (!ldapsam_extract_rid_from_entry(conn->ldap_struct,
+                                                   entry,
+                                                   get_global_sam_sid(),
+                                                   &rid)) {
+                       DEBUG(2, ("Could not find sid from ldap entry\n"));
+                       continue;
+               }
+
+               add_rid_to_array_unique(mem_ctx, rid, member_rids,
+                                       num_members);
+       }
+
+       if (msg != NULL)
+               ldap_msgfree(msg);
+
+       pstr_sprintf(filter,
+                    "(&(objectClass=sambaGroupMapping)"
+                    "(objectClass=posixGroup)"
+                    "(sambaSID=%s))",
+                    sid_string_static(group));
+
+       {
+               const char *attrs[] = { "memberUid", NULL };
+               rc = smbldap_search(conn, lp_ldap_user_suffix(),
+                                   LDAP_SCOPE_SUBTREE, filter, attrs, 0,
+                                   &msg);
+       }
+
+       if (rc != LDAP_SUCCESS)
+               goto done;
+
+       count = ldap_count_entries(conn->ldap_struct, msg);
+
+       if (count > 1) {
+               DEBUG(1, ("Found more than one groupmap entry for %s\n",
+                         sid_string_static(group)));
+               goto done;
+       }
+
+       if (count == 0) {
+               result = NT_STATUS_OK;
+               goto done;
+       }
+
+       entry = ldap_first_entry(conn->ldap_struct, msg);
+       if (entry == NULL)
+               goto done;
+
+       values = ldap_get_values(conn->ldap_struct, msg, "memberUid");
+       if (values == NULL) {
+               result = NT_STATUS_OK;
+               goto done;
+       }
+
+       sid_filter = SMB_STRDUP("(&(objectClass=sambaSamAccount)(|");
+       if (sid_filter == NULL) {
+               result = NT_STATUS_NO_MEMORY;
+               goto done;
+       }
+
+       for (memberuid = values; *memberuid != NULL; memberuid += 1) {
+               tmp = sid_filter;
+               asprintf(&sid_filter, "%s(uid=%s)", tmp, *memberuid);
+               free(tmp);
+               if (sid_filter == NULL) {
+                       result = NT_STATUS_NO_MEMORY;
+                       goto done;
+               }
+       }
+
+       tmp = sid_filter;
+       asprintf(&sid_filter, "%s))", sid_filter);
+       free(tmp);
+       if (sid_filter == NULL) {
+               result = NT_STATUS_NO_MEMORY;
+               goto done;
+       }
+
+       {
+               const char *attrs[] = { "sambaSID", NULL };
+               rc = smbldap_search(conn, lp_ldap_user_suffix(),
+                                   LDAP_SCOPE_SUBTREE, sid_filter, attrs, 0,
+                                   &msg);
+       }
+
+       if (rc != LDAP_SUCCESS)
+               goto done;
+
+       for (entry = ldap_first_entry(conn->ldap_struct, msg);
+            entry != NULL;
+            entry = ldap_next_entry(conn->ldap_struct, entry))
+       {
+               fstring str;
+               DOM_SID sid;
+               uint32 rid;
+
+               if (!smbldap_get_single_attribute(conn->ldap_struct,
+                                                 entry, "sambaSID",
+                                                 str, sizeof(str)-1))
+                       continue;
+
+               if (!string_to_sid(&sid, str))
+                       goto done;
+
+               if (!sid_check_is_in_our_domain(&sid)) {
+                       DEBUG(1, ("Inconsistent SAM -- group member uid not "
+                                 "in our domain\n"));
+                       continue;
+               }
+
+               sid_peek_rid(&sid, &rid);
+
+               add_rid_to_array_unique(mem_ctx, rid, member_rids,
+                                       num_members);
+       }
+
+       result = NT_STATUS_OK;
+       
+ done:
+       SAFE_FREE(sid_filter);
+
+       if (values != NULL)
+               ldap_value_free(values);
+
+       if (msg != NULL)
+               ldap_msgfree(msg);
+
+       return result;
+}
+
+static NTSTATUS ldapsam_enum_group_memberships(struct pdb_methods *methods,
+                                              const char *username,
+                                              gid_t primary_gid,
+                                              DOM_SID **sids, gid_t **gids,
+                                              int *num_groups)
+{
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+       struct smbldap_state *conn = ldap_state->smbldap_state;
+       pstring filter;
+       const char *attrs[] = { "gidNumber", "sambaSID", NULL };
+       char *escape_name;
+       int rc;
+       LDAPMessage *msg = NULL;
+       LDAPMessage *entry;
+       NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+       int num_sids, num_gids;
+
+       if (!lp_parm_bool(-1, "ldapsam", "trusted", False))
+               return pdb_default_enum_group_memberships(methods, username,
+                                                         primary_gid, sids,
+                                                         gids, num_groups);
+
+       *sids = NULL;
+       num_sids = 0;
+
+       escape_name = escape_ldap_string_alloc(username);
+
+       if (escape_name == NULL)
+               return NT_STATUS_NO_MEMORY;
+
+       pstr_sprintf(filter, "(&(objectClass=posixGroup)"
+                    "(|(memberUid=%s)(gidNumber=%d)))",
+                    username, primary_gid);
+
+       rc = smbldap_search(conn, lp_ldap_group_suffix(),
+                           LDAP_SCOPE_SUBTREE, filter, attrs, 0, &msg);
+
+       if (rc != LDAP_SUCCESS)
+               goto done;
+
+       num_gids = 0;
+       *gids = NULL;
+
+       num_sids = 0;
+       *sids = NULL;
+
+       /* We need to add the primary group as the first gid/sid */
+
+       add_gid_to_array_unique(NULL, primary_gid, gids, &num_gids);
+
+       /* This sid will be replaced later */
+
+       add_sid_to_array_unique(NULL, &global_sid_NULL, sids, &num_sids);
+
+       for (entry = ldap_first_entry(conn->ldap_struct, msg);
+            entry != NULL;
+            entry = ldap_next_entry(conn->ldap_struct, entry))
+       {
+               fstring str;
+               DOM_SID sid;
+               gid_t gid;
+               char *end;
+
+               if (!smbldap_get_single_attribute(conn->ldap_struct,
+                                                 entry, "sambaSID",
+                                                 str, sizeof(str)-1))
+                       continue;
+
+               if (!string_to_sid(&sid, str))
+                       goto done;
+
+               if (!smbldap_get_single_attribute(conn->ldap_struct,
+                                                 entry, "gidNumber",
+                                                 str, sizeof(str)-1))
+                       continue;
+
+               gid = strtoul(str, &end, 10);
+
+               if (PTR_DIFF(end, str) != strlen(str))
+                       goto done;
+
+               if (gid == primary_gid) {
+                       sid_copy(&(*sids)[0], &sid);
+               } else {
+                       add_gid_to_array_unique(NULL, gid, gids, &num_gids);
+                       add_sid_to_array_unique(NULL, &sid, sids, &num_sids);
+               }
+       }
+
+       if (sid_compare(&global_sid_NULL, &(*sids)[0]) == 0) {
+               DEBUG(3, ("primary group of [%s] not found\n", username));
+               goto done;
+       }
+
+       *num_groups = num_sids;
+
+       result = NT_STATUS_OK;
+
+ done:
+
+       SAFE_FREE(escape_name);
+       if (msg != NULL)
+               ldap_msgfree(msg);
+
+       return result;
+}
+
+/**********************************************************************
+ *********************************************************************/
+
 static int ldapsam_search_one_group_by_gid(struct ldapsam_privates *ldap_state,
                                           gid_t gid,
                                           LDAPMessage **result)
 {
        pstring filter;
 
-       snprintf(filter, sizeof(filter)-1,
-                "(&(objectClass=posixGroup)(gidNumber=%i))", gid);
+       pstr_sprintf(filter, "(&(|(objectClass=%s)(objectclass=%s))(%s=%lu))", 
+               LDAP_OBJ_POSIXGROUP, LDAP_OBJ_IDMAP_ENTRY,
+               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GIDNUMBER),
+               (unsigned long)gid);
 
        return ldapsam_search_one_group(ldap_state, filter, result);
 }
 
+/**********************************************************************
+ *********************************************************************/
+
 static NTSTATUS ldapsam_add_group_mapping_entry(struct pdb_methods *methods,
                                                GROUP_MAP *map)
 {
@@ -2396,271 +2696,1493 @@ static NTSTATUS ldapsam_add_group_mapping_entry(struct pdb_methods *methods,
                (struct ldapsam_privates *)methods->private_data;
        LDAPMessage *result = NULL;
        LDAPMod **mods = NULL;
+       int count;
+
+       char *tmp;
+       pstring dn;
+       LDAPMessage *entry;
+
+       GROUP_MAP dummy;
+
+       int rc;
+
+       if (NT_STATUS_IS_OK(ldapsam_getgrgid(methods, &dummy,
+                                            map->gid))) {
+               DEBUG(0, ("ldapsam_add_group_mapping_entry: Group %ld already exists in LDAP\n", (unsigned long)map->gid));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       rc = ldapsam_search_one_group_by_gid(ldap_state, map->gid, &result);
+       if (rc != LDAP_SUCCESS) {
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
+
+       if ( count == 0 ) {
+               /* There's no posixGroup account, let's try to find an
+                * appropriate idmap entry for aliases */
+
+               pstring suffix;
+               pstring filter;
+               const char **attr_list;
+
+               ldap_msgfree(result);
+
+               pstrcpy( suffix, lp_ldap_idmap_suffix() );
+               pstr_sprintf(filter, "(&(objectClass=%s)(%s=%u))",
+                            LDAP_OBJ_IDMAP_ENTRY, LDAP_ATTRIBUTE_GIDNUMBER,
+                            map->gid);
+               
+               attr_list = get_attr_list( sidmap_attr_list );
+               rc = smbldap_search(ldap_state->smbldap_state, suffix,
+                                   LDAP_SCOPE_SUBTREE, filter, attr_list,
+                                   0, &result);
+
+               free_attr_list(attr_list);
+
+               if (rc != LDAP_SUCCESS) {
+                       DEBUG(3,("Failure looking up entry (%s)\n",
+                                ldap_err2string(rc) ));
+                       ldap_msgfree(result);
+                       return NT_STATUS_UNSUCCESSFUL;
+               }
+       }
+                          
+       count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
+       if ( count == 0 ) {
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       if (count > 1) {
+               DEBUG(2, ("ldapsam_add_group_mapping_entry: Group %lu must exist exactly once in LDAP\n",
+                         (unsigned long)map->gid));
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
+       tmp = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
+       if (!tmp) {
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+       pstrcpy(dn, tmp);
+       SAFE_FREE(tmp);
+
+       if (!init_ldap_from_group(ldap_state->smbldap_state->ldap_struct,
+                                 result, &mods, map)) {
+               DEBUG(0, ("ldapsam_add_group_mapping_entry: init_ldap_from_group failed!\n"));
+               ldap_mods_free(mods, True);
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       ldap_msgfree(result);
+
+       if (mods == NULL) {
+               DEBUG(0, ("ldapsam_add_group_mapping_entry: mods is empty\n"));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectClass", LDAP_OBJ_GROUPMAP );
+
+       rc = smbldap_modify(ldap_state->smbldap_state, dn, mods);
+       ldap_mods_free(mods, True);
+
+       if (rc != LDAP_SUCCESS) {
+               char *ld_error = NULL;
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
+                               &ld_error);
+               DEBUG(0, ("ldapsam_add_group_mapping_entry: failed to add group %lu error: %s (%s)\n", (unsigned long)map->gid, 
+                         ld_error ? ld_error : "(unknown)", ldap_err2string(rc)));
+               SAFE_FREE(ld_error);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       DEBUG(2, ("ldapsam_add_group_mapping_entry: successfully modified group %lu in LDAP\n", (unsigned long)map->gid));
+       return NT_STATUS_OK;
+}
+
+/**********************************************************************
+ *********************************************************************/
+
+static NTSTATUS ldapsam_update_group_mapping_entry(struct pdb_methods *methods,
+                                                  GROUP_MAP *map)
+{
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+       int rc;
+       char *dn = NULL;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
+       LDAPMod **mods = NULL;
+
+       rc = ldapsam_search_one_group_by_gid(ldap_state, map->gid, &result);
+
+       if (rc != LDAP_SUCCESS) {
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       if (ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result) == 0) {
+               DEBUG(0, ("ldapsam_update_group_mapping_entry: No group to modify!\n"));
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
+
+       if (!init_ldap_from_group(ldap_state->smbldap_state->ldap_struct,
+                                 result, &mods, map)) {
+               DEBUG(0, ("ldapsam_update_group_mapping_entry: init_ldap_from_group failed\n"));
+               ldap_msgfree(result);
+               if (mods != NULL)
+                       ldap_mods_free(mods,True);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       if (mods == NULL) {
+               DEBUG(4, ("ldapsam_update_group_mapping_entry: mods is empty: nothing to do\n"));
+               ldap_msgfree(result);
+               return NT_STATUS_OK;
+       }
+
+       dn = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
+       if (!dn) {
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+       rc = smbldap_modify(ldap_state->smbldap_state, dn, mods);
+       SAFE_FREE(dn);
+
+       ldap_mods_free(mods, True);
+       ldap_msgfree(result);
+
+       if (rc != LDAP_SUCCESS) {
+               char *ld_error = NULL;
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
+                               &ld_error);
+               DEBUG(0, ("ldapsam_update_group_mapping_entry: failed to modify group %lu error: %s (%s)\n", (unsigned long)map->gid, 
+                         ld_error ? ld_error : "(unknown)", ldap_err2string(rc)));
+               SAFE_FREE(ld_error);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       DEBUG(2, ("ldapsam_update_group_mapping_entry: successfully modified group %lu in LDAP\n", (unsigned long)map->gid));
+       return NT_STATUS_OK;
+}
+
+/**********************************************************************
+ *********************************************************************/
+
+static NTSTATUS ldapsam_delete_group_mapping_entry(struct pdb_methods *methods,
+                                                  DOM_SID sid)
+{
+       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)methods->private_data;
+       pstring sidstring, filter;
+       LDAPMessage *result = NULL;
+       int rc;
+       NTSTATUS ret;
+       const char **attr_list;
+
+       sid_to_string(sidstring, &sid);
+       
+       pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))", 
+               LDAP_OBJ_GROUPMAP, LDAP_ATTRIBUTE_SID, sidstring);
+
+       rc = ldapsam_search_one_group(ldap_state, filter, &result);
+
+       if (rc != LDAP_SUCCESS) {
+               return NT_STATUS_NO_SUCH_GROUP;
+       }
+
+       attr_list = get_attr_list( groupmap_attr_list_to_delete );
+       ret = ldapsam_delete_entry(ldap_state, result, LDAP_OBJ_GROUPMAP, attr_list);
+       free_attr_list ( attr_list );
+
+       ldap_msgfree(result);
+
+       return ret;
+}
+
+/**********************************************************************
+ *********************************************************************/
+
+static NTSTATUS ldapsam_setsamgrent(struct pdb_methods *my_methods, BOOL update)
+{
+       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
+       fstring filter;
+       int rc;
+       const char **attr_list;
+
+       pstr_sprintf( filter, "(objectclass=%s)", LDAP_OBJ_GROUPMAP);
+       attr_list = get_attr_list( groupmap_attr_list );
+       rc = smbldap_search(ldap_state->smbldap_state, lp_ldap_group_suffix(),
+                           LDAP_SCOPE_SUBTREE, filter,
+                           attr_list, 0, &ldap_state->result);
+       free_attr_list( attr_list );
+
+       if (rc != LDAP_SUCCESS) {
+               DEBUG(0, ("ldapsam_setsamgrent: LDAP search failed: %s\n", ldap_err2string(rc)));
+               DEBUG(3, ("ldapsam_setsamgrent: Query was: %s, %s\n", lp_ldap_group_suffix(), filter));
+               ldap_msgfree(ldap_state->result);
+               ldap_state->result = NULL;
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       DEBUG(2, ("ldapsam_setsamgrent: %d entries in the base!\n",
+                 ldap_count_entries(ldap_state->smbldap_state->ldap_struct,
+                                    ldap_state->result)));
+
+       ldap_state->entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, ldap_state->result);
+       ldap_state->index = 0;
+
+       return NT_STATUS_OK;
+}
+
+/**********************************************************************
+ *********************************************************************/
+
+static void ldapsam_endsamgrent(struct pdb_methods *my_methods)
+{
+       ldapsam_endsampwent(my_methods);
+}
+
+/**********************************************************************
+ *********************************************************************/
+
+static NTSTATUS ldapsam_getsamgrent(struct pdb_methods *my_methods,
+                                   GROUP_MAP *map)
+{
+       NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
+       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
+       BOOL bret = False;
+
+       while (!bret) {
+               if (!ldap_state->entry)
+                       return ret;
+               
+               ldap_state->index++;
+               bret = init_group_from_ldap(ldap_state, map, ldap_state->entry);
+               
+               ldap_state->entry = ldap_next_entry(ldap_state->smbldap_state->ldap_struct,
+                                           ldap_state->entry); 
+       }
+
+       return NT_STATUS_OK;
+}
+
+/**********************************************************************
+ *********************************************************************/
+
+static NTSTATUS ldapsam_enum_group_mapping(struct pdb_methods *methods,
+                                          enum SID_NAME_USE sid_name_use,
+                                          GROUP_MAP **rmap, int *num_entries,
+                                          BOOL unix_only)
+{
+       GROUP_MAP map;
+       GROUP_MAP *mapt;
+       int entries = 0;
+
+       *num_entries = 0;
+       *rmap = NULL;
+
+       if (!NT_STATUS_IS_OK(ldapsam_setsamgrent(methods, False))) {
+               DEBUG(0, ("ldapsam_enum_group_mapping: Unable to open passdb\n"));
+               return NT_STATUS_ACCESS_DENIED;
+       }
+
+       while (NT_STATUS_IS_OK(ldapsam_getsamgrent(methods, &map))) {
+               if (sid_name_use != SID_NAME_UNKNOWN &&
+                   sid_name_use != map.sid_name_use) {
+                       DEBUG(11,("ldapsam_enum_group_mapping: group %s is not of the requested type\n", map.nt_name));
+                       continue;
+               }
+               if (unix_only==ENUM_ONLY_MAPPED && map.gid==-1) {
+                       DEBUG(11,("ldapsam_enum_group_mapping: group %s is non mapped\n", map.nt_name));
+                       continue;
+               }
+
+               mapt=SMB_REALLOC_ARRAY((*rmap), GROUP_MAP, entries+1);
+               if (!mapt) {
+                       DEBUG(0,("ldapsam_enum_group_mapping: Unable to enlarge group map!\n"));
+                       SAFE_FREE(*rmap);
+                       return NT_STATUS_UNSUCCESSFUL;
+               }
+               else
+                       (*rmap) = mapt;
+
+               mapt[entries] = map;
+
+               entries += 1;
+
+       }
+       ldapsam_endsamgrent(methods);
+
+       *num_entries = entries;
+
+       return NT_STATUS_OK;
+}
+
+static NTSTATUS ldapsam_modify_aliasmem(struct pdb_methods *methods,
+                                       const DOM_SID *alias,
+                                       const DOM_SID *member,
+                                       int modop)
+{
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+       char *dn;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
+       int count;
+       LDAPMod **mods = NULL;
+       int rc;
+
+       pstring filter;
+
+       pstr_sprintf(filter, "(&(|(objectClass=%s)(objectclass=%s))(%s=%s))",
+                    LDAP_OBJ_GROUPMAP, LDAP_OBJ_IDMAP_ENTRY,
+                    get_attr_key2string(groupmap_attr_list,
+                                        LDAP_ATTR_GROUP_SID),
+                    sid_string_static(alias));
+
+       if (ldapsam_search_one_group(ldap_state, filter,
+                                    &result) != LDAP_SUCCESS)
+               return NT_STATUS_NO_SUCH_ALIAS;
+
+       count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct,
+                                  result);
+
+       if (count < 1) {
+               DEBUG(4, ("ldapsam_modify_aliasmem: Did not find alias\n"));
+               ldap_msgfree(result);
+               return NT_STATUS_NO_SUCH_ALIAS;
+       }
+
+       if (count > 1) {
+               DEBUG(1, ("ldapsam_modify_aliasmem: Duplicate entries for filter %s: "
+                         "count=%d\n", filter, count));
+               ldap_msgfree(result);
+               return NT_STATUS_NO_SUCH_ALIAS;
+       }
+
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct,
+                                result);
+
+       if (!entry) {
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       dn = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
+       if (!dn) {
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       smbldap_set_mod(&mods, modop,
+                       get_attr_key2string(groupmap_attr_list,
+                                           LDAP_ATTR_SID_LIST),
+                       sid_string_static(member));
+
+       rc = smbldap_modify(ldap_state->smbldap_state, dn, mods);
+
+       ldap_mods_free(mods, True);
+       ldap_msgfree(result);
+
+       if (rc != LDAP_SUCCESS) {
+               char *ld_error = NULL;
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct,
+                               LDAP_OPT_ERROR_STRING,&ld_error);
+               
+               DEBUG(0, ("ldapsam_modify_aliasmem: Could not modify alias "
+                         "for %s, error: %s (%s)\n", dn, ldap_err2string(rc),
+                         ld_error?ld_error:"unknown"));
+               SAFE_FREE(ld_error);
+               SAFE_FREE(dn);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       SAFE_FREE(dn);
+
+       return NT_STATUS_OK;
+}
+
+static NTSTATUS ldapsam_add_aliasmem(struct pdb_methods *methods,
+                                    const DOM_SID *alias,
+                                    const DOM_SID *member)
+{
+       return ldapsam_modify_aliasmem(methods, alias, member, LDAP_MOD_ADD);
+}
+
+static NTSTATUS ldapsam_del_aliasmem(struct pdb_methods *methods,
+                                    const DOM_SID *alias,
+                                    const DOM_SID *member)
+{
+       return ldapsam_modify_aliasmem(methods, alias, member,
+                                      LDAP_MOD_DELETE);
+}
+
+static NTSTATUS ldapsam_enum_aliasmem(struct pdb_methods *methods,
+                                     const DOM_SID *alias, DOM_SID **members,
+                                     int *num_members)
+{
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
+       int count;
+       char **values;
+       int i;
+       pstring filter;
+
+       *members = NULL;
+       *num_members = 0;
+
+       pstr_sprintf(filter, "(&(|(objectClass=%s)(objectclass=%s))(%s=%s))",
+                    LDAP_OBJ_GROUPMAP, LDAP_OBJ_IDMAP_ENTRY,
+                    get_attr_key2string(groupmap_attr_list,
+                                        LDAP_ATTR_GROUP_SID),
+                    sid_string_static(alias));
+
+       if (ldapsam_search_one_group(ldap_state, filter,
+                                    &result) != LDAP_SUCCESS)
+               return NT_STATUS_NO_SUCH_ALIAS;
+
+       count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct,
+                                  result);
+
+       if (count < 1) {
+               DEBUG(4, ("ldapsam_enum_aliasmem: Did not find alias\n"));
+               ldap_msgfree(result);
+               return NT_STATUS_NO_SUCH_ALIAS;
+       }
+
+       if (count > 1) {
+               DEBUG(1, ("ldapsam_enum_aliasmem: Duplicate entries for filter %s: "
+                         "count=%d\n", filter, count));
+               ldap_msgfree(result);
+               return NT_STATUS_NO_SUCH_ALIAS;
+       }
+
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct,
+                                result);
+
+       if (!entry) {
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       values = ldap_get_values(ldap_state->smbldap_state->ldap_struct,
+                                entry,
+                                get_attr_key2string(groupmap_attr_list,
+                                                    LDAP_ATTR_SID_LIST));
+
+       if (values == NULL) {
+               ldap_msgfree(result);
+               return NT_STATUS_OK;
+       }
+
+       count = ldap_count_values(values);
+
+       for (i=0; i<count; i++) {
+               DOM_SID member;
+
+               if (!string_to_sid(&member, values[i]))
+                       continue;
+
+               add_sid_to_array(NULL, &member, members, num_members);
+       }
+
+       ldap_value_free(values);
+       ldap_msgfree(result);
+
+       return NT_STATUS_OK;
+}
+
+static NTSTATUS ldapsam_alias_memberships(struct pdb_methods *methods,
+                                         TALLOC_CTX *mem_ctx,
+                                         const DOM_SID *domain_sid,
+                                         const DOM_SID *members,
+                                         int num_members,
+                                         uint32 **alias_rids,
+                                         int *num_alias_rids)
+{
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+       LDAP *ldap_struct;
+
+       const char *attrs[] = { LDAP_ATTRIBUTE_SID, NULL };
+
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
+       int i;
+       int rc;
+       char *filter;
+
+       /* This query could be further optimized by adding a
+          (&(sambaSID=<domain-sid>*)) so that only those aliases that are
+          asked for in the getuseraliases are returned. */        
+
+       filter = talloc_asprintf(mem_ctx,
+                                "(&(|(objectclass=%s)(objectclass=%s))(|",
+                                LDAP_OBJ_GROUPMAP, LDAP_OBJ_IDMAP_ENTRY);
+
+       for (i=0; i<num_members; i++)
+               filter = talloc_asprintf(mem_ctx, "%s(sambaSIDList=%s)",
+                                        filter,
+                                        sid_string_static(&members[i]));
+
+       filter = talloc_asprintf(mem_ctx, "%s))", filter);
+
+       rc = smbldap_search(ldap_state->smbldap_state, lp_ldap_group_suffix(),
+                           LDAP_SCOPE_SUBTREE, filter, attrs, 0, &result);
+
+       if (rc != LDAP_SUCCESS)
+               return NT_STATUS_UNSUCCESSFUL;
+
+       ldap_struct = ldap_state->smbldap_state->ldap_struct;
+
+       for (entry = ldap_first_entry(ldap_struct, result);
+            entry != NULL;
+            entry = ldap_next_entry(ldap_struct, entry))
+       {
+               fstring sid_str;
+               DOM_SID sid;
+               uint32 rid;
+
+               if (!smbldap_get_single_attribute(ldap_struct, entry,
+                                                 LDAP_ATTRIBUTE_SID,
+                                                 sid_str,
+                                                 sizeof(sid_str)-1))
+                       continue;
+
+               if (!string_to_sid(&sid, sid_str))
+                       continue;
+
+               if (!sid_peek_check_rid(domain_sid, &sid, &rid))
+                       continue;
+
+               add_rid_to_array_unique(mem_ctx, rid, alias_rids,
+                                       num_alias_rids);
+       }
+
+       ldap_msgfree(result);
+       return NT_STATUS_OK;
+}
+
+static NTSTATUS ldapsam_set_account_policy(struct pdb_methods *methods, int policy_index, uint32 value)
+{
+       NTSTATUS ntstatus = NT_STATUS_UNSUCCESSFUL;
+       int rc;
+       LDAPMod **mods = NULL;
+       fstring value_string;
+       const char *policy_attr = NULL;
+
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+
+       const char *attrs[2];
+
+       DEBUG(10,("ldapsam_set_account_policy\n"));
+
+       if (!ldap_state->domain_dn) {
+               return NT_STATUS_INVALID_PARAMETER;
+       }
+
+       policy_attr = get_account_policy_attr(policy_index);
+       if (policy_attr == NULL) {
+               DEBUG(0,("ldapsam_set_account_policy: invalid policy\n"));
+               return ntstatus;
+       }
+
+       attrs[0] = policy_attr;
+       attrs[1] = NULL;
+
+       slprintf(value_string, sizeof(value_string) - 1, "%i", value);
+
+       smbldap_set_mod(&mods, LDAP_MOD_REPLACE, policy_attr, value_string);
+
+       rc = smbldap_modify(ldap_state->smbldap_state, ldap_state->domain_dn, mods);
+
+       ldap_mods_free(mods, True);
+
+       if (rc != LDAP_SUCCESS) {
+               char *ld_error = NULL;
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct,
+                               LDAP_OPT_ERROR_STRING,&ld_error);
+               
+               DEBUG(0, ("ldapsam_set_account_policy: Could not set account policy "
+                         "for %s, error: %s (%s)\n", ldap_state->domain_dn, ldap_err2string(rc),
+                         ld_error?ld_error:"unknown"));
+               SAFE_FREE(ld_error);
+               return ntstatus;
+       }
+
+       if (!cache_account_policy_set(policy_index, value)) {
+               DEBUG(0,("ldapsam_set_account_policy: failed to update local tdb cache\n"));
+               return ntstatus;
+       }
+
+       return NT_STATUS_OK;
+}
+
+static NTSTATUS ldapsam_get_account_policy_from_ldap(struct pdb_methods *methods, int policy_index, uint32 *value)
+{
+       NTSTATUS ntstatus = NT_STATUS_UNSUCCESSFUL;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
+       int count;
+       int rc;
+       char **vals = NULL;
+       const char *policy_attr = NULL;
+
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+
+       const char *attrs[2];
+
+       DEBUG(10,("ldapsam_get_account_policy_from_ldap\n"));
+
+       if (!ldap_state->domain_dn) {
+               return NT_STATUS_INVALID_PARAMETER;
+       }
+
+       policy_attr = get_account_policy_attr(policy_index);
+       if (!policy_attr) {
+               DEBUG(0,("ldapsam_get_account_policy_from_ldap: invalid policy index: %d\n", policy_index));
+               return ntstatus;
+       }
+
+       attrs[0] = policy_attr;
+       attrs[1] = NULL;
+
+       rc = smbldap_search(ldap_state->smbldap_state, ldap_state->domain_dn,
+                           LDAP_SCOPE_BASE, "(objectclass=*)", attrs, 0, &result);
+
+       if (rc != LDAP_SUCCESS) {
+               char *ld_error = NULL;
+               ldap_get_option(ldap_state->smbldap_state->ldap_struct,
+                               LDAP_OPT_ERROR_STRING,&ld_error);
+               
+               DEBUG(0, ("ldapsam_get_account_policy_from_ldap: Could not set account policy "
+                         "for %s, error: %s (%s)\n", ldap_state->domain_dn, ldap_err2string(rc),
+                         ld_error?ld_error:"unknown"));
+               SAFE_FREE(ld_error);
+               return ntstatus;
+       }
+
+       count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
+       if (count < 1) {
+               goto out;
+       }
+
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
+       if (entry == NULL) {
+               goto out;
+       }
+
+       vals = ldap_get_values(ldap_state->smbldap_state->ldap_struct, entry, policy_attr);
+       if (vals == NULL) {
+               goto out;
+       }
+
+       *value = (uint32)atol(vals[0]);
+       
+       ntstatus = NT_STATUS_OK;
+
+out:
+       if (vals)
+               ldap_value_free(vals);
+       ldap_msgfree(result);
+
+       return ntstatus;
+}
+
+/* wrapper around ldapsam_get_account_policy_from_ldap(), handles tdb as cache 
+
+   - if there is a valid cache entry, return that
+   - if there is an LDAP entry, update cache and return 
+   - otherwise set to default, update cache and return
+
+   Guenther
+*/
+static NTSTATUS ldapsam_get_account_policy(struct pdb_methods *methods, int policy_index, uint32 *value)
+{
+       NTSTATUS ntstatus = NT_STATUS_UNSUCCESSFUL;
+
+       if (cache_account_policy_get(policy_index, value)) {
+               DEBUG(11,("ldapsam_get_account_policy: got valid value from cache\n"));
+               return NT_STATUS_OK;
+       }
+
+       ntstatus = ldapsam_get_account_policy_from_ldap(methods, policy_index, value);
+       if (NT_STATUS_IS_OK(ntstatus)) {
+               goto update_cache;
+       }
+
+       DEBUG(10,("ldapsam_get_account_policy: failed to retrieve from ldap, returning default.\n"));
+
+#if 0
+       /* should we automagically migrate old tdb value here ? */
+       if (account_policy_get(policy_index, value))
+               goto update_ldap;
+
+       DEBUG(10,("ldapsam_get_account_policy: no tdb for %d, trying default\n", policy_index));
+#endif
+
+       if (!account_policy_get_default(policy_index, value)) {
+               return ntstatus;
+       }
+       
+/* update_ldap: */
+       ntstatus = ldapsam_set_account_policy(methods, policy_index, *value);
+       if (!NT_STATUS_IS_OK(ntstatus)) {
+               return ntstatus;
+       }
+               
+ update_cache:
+       if (!cache_account_policy_set(policy_index, *value)) {
+               DEBUG(0,("ldapsam_get_account_policy: failed to update local tdb as a cache\n"));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       return NT_STATUS_OK;
+}
+
+static NTSTATUS ldapsam_lookup_rids(struct pdb_methods *methods,
+                                   TALLOC_CTX *mem_ctx,
+                                   const DOM_SID *domain_sid,
+                                   int num_rids,
+                                   uint32 *rids,
+                                   const char ***names,
+                                   uint32 **attrs)
+{
+       struct ldapsam_privates *ldap_state =
+               (struct ldapsam_privates *)methods->private_data;
+       LDAP *ldap_struct = ldap_state->smbldap_state->ldap_struct;
+       LDAPMessage *msg = NULL;
+       LDAPMessage *entry;
+       char *allsids = NULL;
+       char *tmp;
+       int i, rc, num_mapped;
+       NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+
+       if (!lp_parm_bool(-1, "ldapsam", "trusted", False))
+               return pdb_default_lookup_rids(methods, mem_ctx, domain_sid,
+                                              num_rids, rids, names, attrs);
+
+       if (!sid_equal(domain_sid, get_global_sam_sid())) {
+               /* TODO: Sooner or later we need to look up BUILTIN rids as
+                * well. -- vl */
+               goto done;
+       }
+
+       (*names) = TALLOC_ZERO_ARRAY(mem_ctx, const char *, num_rids);
+       (*attrs) = TALLOC_ARRAY(mem_ctx, uint32, num_rids);
+
+       if ((num_rids != 0) && (((*names) == NULL) || ((*attrs) == NULL)))
+               return NT_STATUS_NO_MEMORY;
+
+       for (i=0; i<num_rids; i++)
+               (*attrs)[i] = SID_NAME_UNKNOWN;
+
+       allsids = SMB_STRDUP("");
+       if (allsids == NULL) return NT_STATUS_NO_MEMORY;
+
+       for (i=0; i<num_rids; i++) {
+               DOM_SID sid;
+               sid_copy(&sid, domain_sid);
+               sid_append_rid(&sid, rids[i]);
+               tmp = allsids;
+               asprintf(&allsids, "%s(sambaSid=%s)", allsids,
+                        sid_string_static(&sid));
+               if (allsids == NULL) return NT_STATUS_NO_MEMORY;
+               free(tmp);
+       }
+
+       /* First look for users */
+
+       {
+               char *filter;
+               const char *ldap_attrs[] = { "uid", "sambaSid", NULL };
+
+               asprintf(&filter, ("(&(objectClass=sambaSamAccount)(|%s))"),
+                        allsids);
+               if (filter == NULL) return NT_STATUS_NO_MEMORY;
+
+               rc = smbldap_search(ldap_state->smbldap_state,
+                                   lp_ldap_user_suffix(),
+                                   LDAP_SCOPE_SUBTREE, filter, ldap_attrs, 0,
+                                   &msg);
+
+               SAFE_FREE(filter);
+       }
+
+       if (rc != LDAP_SUCCESS)
+               goto done;
+
+       num_mapped = 0;
+
+       for (entry = ldap_first_entry(ldap_struct, msg);
+            entry != NULL;
+            entry = ldap_next_entry(ldap_struct, entry))
+       {
+               uint32 rid;
+               int rid_index;
+               fstring str;
+
+               if (!ldapsam_extract_rid_from_entry(ldap_struct, entry,
+                                                   get_global_sam_sid(),
+                                                   &rid)) {
+                       DEBUG(2, ("Could not find sid from ldap entry\n"));
+                       continue;
+               }
+
+               if (!smbldap_get_single_attribute(ldap_struct, entry,
+                                                 "uid", str, sizeof(str)-1)) {
+                       DEBUG(2, ("Could not retrieve uid attribute\n"));
+                       continue;
+               }
+
+               for (rid_index = 0; rid_index < num_rids; rid_index++) {
+                       if (rid == rids[rid_index])
+                               break;
+               }
+
+               if (rid_index == num_rids) {
+                       DEBUG(2, ("Got a RID not asked for: %d\n", rid));
+                       continue;
+               }
+
+               (*attrs)[rid_index] = SID_NAME_USER;
+               (*names)[rid_index] = talloc_strdup(mem_ctx, str);
+               if ((*names)[rid_index] == NULL) return NT_STATUS_NO_MEMORY;
+
+               num_mapped += 1;
+       }
+
+       if (num_mapped == num_rids) {
+               /* No need to look for groups anymore -- we're done */
+               result = NT_STATUS_OK;
+               goto done;
+       }
+
+       /* Same game for groups */
+
+       {
+               char *filter;
+               const char *ldap_attrs[] = { "cn", "sambaSid", NULL };
+
+               asprintf(&filter, ("(&(objectClass=sambaGroupMapping)(|%s))"),
+                        allsids);
+               if (filter == NULL) return NT_STATUS_NO_MEMORY;
+
+               rc = smbldap_search(ldap_state->smbldap_state,
+                                   lp_ldap_group_suffix(),
+                                   LDAP_SCOPE_SUBTREE, filter, ldap_attrs, 0,
+                                   &msg);
+
+               SAFE_FREE(filter);
+       }
+
+       if (rc != LDAP_SUCCESS)
+               goto done;
+
+       for (entry = ldap_first_entry(ldap_struct, msg);
+            entry != NULL;
+            entry = ldap_next_entry(ldap_struct, entry))
+       {
+               uint32 rid;
+               int rid_index;
+               fstring str;
+
+               if (!ldapsam_extract_rid_from_entry(ldap_struct, entry,
+                                                   get_global_sam_sid(),
+                                                   &rid)) {
+                       DEBUG(2, ("Could not find sid from ldap entry\n"));
+                       continue;
+               }
+
+               if (!smbldap_get_single_attribute(ldap_struct, entry,
+                                                 "cn", str, sizeof(str)-1)) {
+                       DEBUG(2, ("Could not retrieve cn attribute\n"));
+                       continue;
+               }
+
+               for (rid_index = 0; rid_index < num_rids; rid_index++) {
+                       if (rid == rids[rid_index])
+                               break;
+               }
+
+               if (rid_index == num_rids) {
+                       DEBUG(2, ("Got a RID not asked for: %d\n", rid));
+                       continue;
+               }
+
+               (*attrs)[rid_index] = SID_NAME_DOM_GRP;
+               (*names)[rid_index] = talloc_strdup(mem_ctx, str);
+               if ((*names)[rid_index] == NULL) return NT_STATUS_NO_MEMORY;
+               num_mapped += 1;
+       }
+
+       result = NT_STATUS_NONE_MAPPED;
+
+       if (num_mapped > 0)
+               result = (num_mapped == num_rids) ?
+                       NT_STATUS_OK : STATUS_SOME_UNMAPPED;
+ done:
+       SAFE_FREE(allsids);
+
+       if (msg != NULL)
+               ldap_msgfree(msg);
+
+       return result;
+}
+
+char *get_ldap_filter(TALLOC_CTX *mem_ctx, const char *username)
+{
+       char *filter = NULL;
+       char *escaped = NULL;
+       char *result = NULL;
+
+       asprintf(&filter, "(&%s(objectclass=sambaSamAccount))",
+                "(uid=%u)");
+       if (filter == NULL) goto done;
+
+       escaped = escape_ldap_string_alloc(username);
+       if (escaped == NULL) goto done;
+
+       filter = realloc_string_sub(filter, "%u", username);
+       result = talloc_strdup(mem_ctx, filter);
+
+ done:
+       SAFE_FREE(filter);
+       SAFE_FREE(escaped);
+
+       return result;
+}
+
+const char **talloc_attrs(TALLOC_CTX *mem_ctx, ...)
+{
+       int i, num = 0;
+       va_list ap;
+       const char **result;
+
+       va_start(ap, mem_ctx);
+       while (va_arg(ap, const char *) != NULL)
+               num += 1;
+       va_end(ap);
+
+       result = TALLOC_ARRAY(mem_ctx, const char *, num+1);
+
+       va_start(ap, mem_ctx);
+       for (i=0; i<num; i++)
+               result[i] = talloc_strdup(mem_ctx, va_arg(ap, const char*));
+       va_end(ap);
+
+       result[num] = NULL;
+       return result;
+}
+
+struct ldap_search_state {
+       struct smbldap_state *connection;
+
+       uint16 acct_flags;
+       uint16 group_type;
+
+       const char *base;
+       int scope;
+       const char *filter;
+       const char **attrs;
+       int attrsonly;
+       void *pagedresults_cookie;
+
+       LDAPMessage *entries, *current_entry;
+       BOOL (*ldap2displayentry)(struct ldap_search_state *state,
+                                 TALLOC_CTX *mem_ctx,
+                                 LDAP *ld, LDAPMessage *entry,
+                                 struct samr_displayentry *result);
+};
+
+static BOOL ldapsam_search_firstpage(struct pdb_search *search)
+{
+       struct ldap_search_state *state = search->private_data;
+       LDAP *ld;
+       int rc = LDAP_OPERATIONS_ERROR;
+
+       state->entries = NULL;
+
+       if (state->connection->paged_results) {
+               rc = smbldap_search_paged(state->connection, state->base,
+                                         state->scope, state->filter,
+                                         state->attrs, state->attrsonly,
+                                         lp_ldap_page_size(), &state->entries,
+                                         &state->pagedresults_cookie);
+       }
+
+       if ((rc != LDAP_SUCCESS) || (state->entries == NULL)) {
+
+               if (state->entries != NULL) {
+                       /* Left over from unsuccessful paged attempt */
+                       ldap_msgfree(state->entries);
+                       state->entries = NULL;
+               }
+
+               rc = smbldap_search(state->connection, state->base,
+                                   state->scope, state->filter, state->attrs,
+                                   state->attrsonly, &state->entries);
+
+               if ((rc != LDAP_SUCCESS) || (state->entries == NULL))
+                       return False;
+
+               /* Ok, the server was lying. It told us it could do paged
+                * searches when it could not. */
+               state->connection->paged_results = False;
+       }
+
+        ld = state->connection->ldap_struct;
+        if ( ld == NULL) {
+                DEBUG(5, ("Don't have an LDAP connection right after a "
+                         "search\n"));
+                return False;
+        }
+        state->current_entry = ldap_first_entry(ld, state->entries);
+
+       if (state->current_entry == NULL) {
+               ldap_msgfree(state->entries);
+               state->entries = NULL;
+       }
+
+       return True;
+}
+
+static BOOL ldapsam_search_nextpage(struct pdb_search *search)
+{
+       struct ldap_search_state *state = search->private_data;
+       LDAP *ld = state->connection->ldap_struct;
+       int rc;
+
+       if (!state->connection->paged_results) {
+               /* There is no next page when there are no paged results */
+               return False;
+       }
+
+       rc = smbldap_search_paged(state->connection, state->base,
+                                 state->scope, state->filter, state->attrs,
+                                 state->attrsonly, lp_ldap_page_size(),
+                                 &state->entries,
+                                 &state->pagedresults_cookie);
+
+       if ((rc != LDAP_SUCCESS) || (state->entries == NULL))
+               return False;
+
+       state->current_entry = ldap_first_entry(ld, state->entries);
+
+       if (state->current_entry == NULL) {
+               ldap_msgfree(state->entries);
+               state->entries = NULL;
+       }
+
+       return True;
+}
+
+static BOOL ldapsam_search_next_entry(struct pdb_search *search,
+                                     struct samr_displayentry *entry)
+{
+       struct ldap_search_state *state = search->private_data;
+       LDAP *ld = state->connection->ldap_struct;
+       BOOL result;
+
+ retry:
+       if ((state->entries == NULL) && (state->pagedresults_cookie == NULL))
+               return False;
+
+       if ((state->entries == NULL) &&
+           !ldapsam_search_nextpage(search))
+                   return False;
+
+       result = state->ldap2displayentry(state, search->mem_ctx, ld,
+                                         state->current_entry, entry);
+
+       if (!result) {
+               char *dn;
+               dn = ldap_get_dn(ld, state->current_entry);
+               DEBUG(5, ("Skipping entry %s\n", dn != NULL ? dn : "<NULL>"));
+               if (dn != NULL) ldap_memfree(dn);
+       }
+
+       state->current_entry = ldap_next_entry(ld, state->current_entry);
+
+       if (state->current_entry == NULL) {
+               ldap_msgfree(state->entries);
+               state->entries = NULL;
+       }
+
+       if (!result) goto retry;
+
+       return True;
+}
+
+static void ldapsam_search_end(struct pdb_search *search)
+{
+       struct ldap_search_state *state = search->private_data;
+       int rc;
+
+       if (state->pagedresults_cookie == NULL)
+               return;
+
+       if (state->entries != NULL)
+               ldap_msgfree(state->entries);
+
+       state->entries = NULL;
+       state->current_entry = NULL;
+
+       if (!state->connection->paged_results)
+               return;
+
+       /* Tell the LDAP server we're not interested in the rest anymore. */
 
-       char *tmp;
-       pstring dn;
-       LDAPMessage *entry;
+       rc = smbldap_search_paged(state->connection, state->base, state->scope,
+                                 state->filter, state->attrs,
+                                 state->attrsonly, 0, &state->entries,
+                                 &state->pagedresults_cookie);
 
-       GROUP_MAP dummy;
+       if (rc != LDAP_SUCCESS)
+               DEBUG(5, ("Could not end search properly\n"));
 
-       int rc;
+       return;
+}
 
-       if (NT_STATUS_IS_OK(ldapsam_getgrgid(methods, &dummy,
-                                            map->gid, False))) {
-               DEBUG(0, ("Group %i already exists in LDAP\n", map->gid));
-               return NT_STATUS_UNSUCCESSFUL;
-       }
+static BOOL ldapuser2displayentry(struct ldap_search_state *state,
+                                 TALLOC_CTX *mem_ctx,
+                                 LDAP *ld, LDAPMessage *entry,
+                                 struct samr_displayentry *result)
+{
+       char **vals;
+       DOM_SID sid;
+       uint16 acct_flags;
 
-       rc = ldapsam_search_one_group_by_gid(ldap_state, map->gid, &result);
-       if (rc != LDAP_SUCCESS) {
-               return NT_STATUS_UNSUCCESSFUL;
+       vals = ldap_get_values(ld, entry, "sambaAcctFlags");
+       if ((vals == NULL) || (vals[0] == NULL)) {
+               DEBUG(5, ("\"sambaAcctFlags\" not found\n"));
+               return False;
        }
+       acct_flags = pdb_decode_acct_ctrl(vals[0]);
+       ldap_value_free(vals);
 
-       if (ldap_count_entries(ldap_state->ldap_struct, result) != 1) {
-               DEBUG(2, ("Group %i must exist exactly once in LDAP\n",
-                         map->gid));
-               ldap_msgfree(result);
-               return NT_STATUS_UNSUCCESSFUL;
-       }
+       if ((state->acct_flags != 0) &&
+           ((state->acct_flags & acct_flags) == 0))
+               return False;           
 
-       entry = ldap_first_entry(ldap_state->ldap_struct, result);
-       tmp = ldap_get_dn(ldap_state->ldap_struct, entry);
-       pstrcpy(dn, tmp);
-       ldap_memfree(tmp);
+       result->acct_flags = acct_flags;
+       result->account_name = "";
+       result->fullname = "";
+       result->description = "";
 
-       if (!init_ldap_from_group(ldap_state->ldap_struct,
-                                 result, &mods, map)) {
-               DEBUG(0, ("init_ldap_from_group failed!\n"));
-               ldap_mods_free(mods, 1);
-               ldap_msgfree(result);
-               return NT_STATUS_UNSUCCESSFUL;
+       vals = ldap_get_values(ld, entry, "uid");
+       if ((vals == NULL) || (vals[0] == NULL)) {
+               DEBUG(5, ("\"uid\" not found\n"));
+               return False;
+       }
+       pull_utf8_talloc(mem_ctx,
+                        CONST_DISCARD(char **, &result->account_name),
+                        vals[0]);
+       ldap_value_free(vals);
+
+       vals = ldap_get_values(ld, entry, "displayName");
+       if ((vals == NULL) || (vals[0] == NULL))
+               DEBUG(8, ("\"displayName\" not found\n"));
+       else
+               pull_utf8_talloc(mem_ctx,
+                                CONST_DISCARD(char **, &result->fullname),
+                                vals[0]);
+       ldap_value_free(vals);
+
+       vals = ldap_get_values(ld, entry, "description");
+       if ((vals == NULL) || (vals[0] == NULL))
+               DEBUG(8, ("\"description\" not found\n"));
+       else
+               pull_utf8_talloc(mem_ctx,
+                                CONST_DISCARD(char **, &result->description),
+                                vals[0]);
+       ldap_value_free(vals);
+
+       if ((result->account_name == NULL) ||
+           (result->fullname == NULL) ||
+           (result->description == NULL)) {
+               DEBUG(0, ("talloc failed\n"));
+               return False;
+       }
+       
+       vals = ldap_get_values(ld, entry, "sambaSid");
+       if ((vals == NULL) || (vals[0] == NULL)) {
+               DEBUG(0, ("\"objectSid\" not found\n"));
+               return False;
        }
 
-       ldap_msgfree(result);
+       if (!string_to_sid(&sid, vals[0])) {
+               DEBUG(0, ("Could not convert %s to SID\n", vals[0]));
+               ldap_value_free(vals);
+               return False;
+       }
+       ldap_value_free(vals);
 
-       if (mods == NULL) {
-               DEBUG(0, ("mods is empty\n"));
-               return NT_STATUS_UNSUCCESSFUL;
+       if (!sid_peek_check_rid(get_global_sam_sid(), &sid, &result->rid)) {
+               DEBUG(0, ("sid %s does not belong to our domain\n", sid_string_static(&sid)));
+               return False;
        }
 
-       make_a_mod(&mods, LDAP_MOD_ADD, "objectClass",
-                  "sambaGroupMapping");
+       return True;
+}
 
-       rc = ldapsam_modify(ldap_state, dn, mods);
-       ldap_mods_free(mods, 1);
 
-       if (rc != LDAP_SUCCESS) {
-               char *ld_error = NULL;
-               ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
-                               &ld_error);
-               DEBUG(0, ("failed to add group %i error: %s (%s)\n", map->gid, 
-                         ld_error ? ld_error : "(unknown)", ldap_err2string(rc)));
-               SAFE_FREE(ld_error);
-               return NT_STATUS_UNSUCCESSFUL;
+static BOOL ldapsam_search_users(struct pdb_methods *methods,
+                                struct pdb_search *search,
+                                uint16 acct_flags)
+{
+       struct ldapsam_privates *ldap_state = methods->private_data;
+       struct ldap_search_state *state;
+
+       state = TALLOC_P(search->mem_ctx, struct ldap_search_state);
+       if (state == NULL) {
+               DEBUG(0, ("talloc failed\n"));
+               return False;
        }
 
-       DEBUG(2, ("successfully modified group %i in LDAP\n", map->gid));
-       return NT_STATUS_OK;
+       state->connection = ldap_state->smbldap_state;
+
+       if ((acct_flags != 0) && ((acct_flags & ACB_NORMAL) != 0))
+               state->base = lp_ldap_user_suffix();
+       else if ((acct_flags != 0) &&
+                ((acct_flags & (ACB_WSTRUST|ACB_SVRTRUST|ACB_DOMTRUST)) != 0))
+               state->base = lp_ldap_machine_suffix();
+       else
+               state->base = lp_ldap_suffix();
+
+       state->acct_flags = acct_flags;
+       state->base = talloc_strdup(search->mem_ctx, state->base);
+       state->scope = LDAP_SCOPE_SUBTREE;
+       state->filter = get_ldap_filter(search->mem_ctx, "*");
+       state->attrs = talloc_attrs(search->mem_ctx, "uid", "sambaSid",
+                                   "displayName", "description",
+                                   "sambaAcctFlags", NULL);
+       state->attrsonly = 0;
+       state->pagedresults_cookie = NULL;
+       state->entries = NULL;
+       state->ldap2displayentry = ldapuser2displayentry;
+
+       if ((state->filter == NULL) || (state->attrs == NULL)) {
+               DEBUG(0, ("talloc failed\n"));
+               return False;
+       }
+
+       search->private_data = state;
+       search->next_entry = ldapsam_search_next_entry;
+       search->search_end = ldapsam_search_end;
+
+       return ldapsam_search_firstpage(search);
 }
 
-static NTSTATUS ldapsam_update_group_mapping_entry(struct pdb_methods *methods,
-                                                  GROUP_MAP *map)
+static BOOL ldapgroup2displayentry(struct ldap_search_state *state,
+                                  TALLOC_CTX *mem_ctx,
+                                  LDAP *ld, LDAPMessage *entry,
+                                  struct samr_displayentry *result)
 {
-       struct ldapsam_privates *ldap_state =
-               (struct ldapsam_privates *)methods->private_data;
-       int rc;
-       char *dn;
-       LDAPMessage *result;
-       LDAPMessage *entry;
-       LDAPMod **mods;
+       char **vals;
+       DOM_SID sid;
+       uint16 group_type;
 
-       rc = ldapsam_search_one_group_by_gid(ldap_state, map->gid, &result);
+       result->account_name = "";
+       result->fullname = "";
+       result->description = "";
 
-       if (rc != LDAP_SUCCESS) {
-               return NT_STATUS_UNSUCCESSFUL;
-       }
 
-       if (ldap_count_entries(ldap_state->ldap_struct, result) == 0) {
-               DEBUG(0, ("No group to modify!\n"));
-               ldap_msgfree(result);
-               return NT_STATUS_UNSUCCESSFUL;
+       vals = ldap_get_values(ld, entry, "sambaGroupType");
+       if ((vals == NULL) || (vals[0] == NULL)) {
+               DEBUG(5, ("\"sambaGroupType\" not found\n"));
+               return False;
        }
 
-       entry = ldap_first_entry(ldap_state->ldap_struct, result);
-       dn = ldap_get_dn(ldap_state->ldap_struct, entry);
+       group_type = atoi(vals[0]);
 
-       if (!init_ldap_from_group(ldap_state->ldap_struct,
-                                 result, &mods, map)) {
-               DEBUG(0, ("init_ldap_from_group failed\n"));
-               ldap_msgfree(result);
-               return NT_STATUS_UNSUCCESSFUL;
+       if ((state->group_type != 0) &&
+           ((state->group_type != group_type))) {
+               return False;
        }
 
-       ldap_msgfree(result);
+       /* display name is the NT group name */
 
-       if (mods == NULL) {
-               DEBUG(4, ("mods is empty: nothing to do\n"));
-               return NT_STATUS_UNSUCCESSFUL;
+       vals = ldap_get_values(ld, entry, "displayName");
+       if ((vals == NULL) || (vals[0] == NULL)) {
+               DEBUG(8, ("\"displayName\" not found\n"));
+
+               /* fallback to the 'cn' attribute */
+               vals = ldap_get_values(ld, entry, "cn");
+               if ((vals == NULL) || (vals[0] == NULL)) {
+                       DEBUG(5, ("\"cn\" not found\n"));
+                       return False;
+               }
+               pull_utf8_talloc(mem_ctx, CONST_DISCARD(char **, &result->account_name), vals[0]);
+       }
+       else {
+               pull_utf8_talloc(mem_ctx, CONST_DISCARD(char **, &result->account_name), vals[0]);
        }
 
-       rc = ldapsam_modify(ldap_state, dn, mods);
+       ldap_value_free(vals);
 
-       ldap_mods_free(mods, 1);
+       vals = ldap_get_values(ld, entry, "description");
+       if ((vals == NULL) || (vals[0] == NULL))
+               DEBUG(8, ("\"description\" not found\n"));
+       else
+               pull_utf8_talloc(mem_ctx,
+                                CONST_DISCARD(char **, &result->description),
+                                vals[0]);
+       ldap_value_free(vals);
 
-       if (rc != LDAP_SUCCESS) {
-               char *ld_error = NULL;
-               ldap_get_option(ldap_state->ldap_struct, LDAP_OPT_ERROR_STRING,
-                               &ld_error);
-               DEBUG(0, ("failed to modify group %i error: %s (%s)\n", map->gid, 
-                         ld_error ? ld_error : "(unknown)", ldap_err2string(rc)));
-               SAFE_FREE(ld_error);
+       if ((result->account_name == NULL) ||
+           (result->fullname == NULL) ||
+           (result->description == NULL)) {
+               DEBUG(0, ("talloc failed\n"));
+               return False;
+       }
+       
+       vals = ldap_get_values(ld, entry, "sambaSid");
+       if ((vals == NULL) || (vals[0] == NULL)) {
+               DEBUG(0, ("\"objectSid\" not found\n"));
+               return False;
        }
 
-       DEBUG(2, ("successfully modified group %i in LDAP\n", map->gid));
-       return NT_STATUS_OK;
-}
+       if (!string_to_sid(&sid, vals[0])) {
+               DEBUG(0, ("Could not convert %s to SID\n", vals[0]));
+               return False;
+       }
 
-static NTSTATUS ldapsam_delete_group_mapping_entry(struct pdb_methods *methods,
-                                                  DOM_SID sid)
-{
-       struct ldapsam_privates *ldap_state =
-               (struct ldapsam_privates *)methods->private_data;
-       pstring sidstring, filter;
-       LDAPMessage *result;
-       int rc;
-       NTSTATUS ret;
+       ldap_value_free(vals);
 
-       const char *sam_group_attrs[] = { "ntSid", "ntGroupType",
-                                         "description", "displayName",
-                                         NULL };
-       sid_to_string(sidstring, &sid);
-       snprintf(filter, sizeof(filter)-1,
-                "(&(objectClass=sambaGroupMapping)(ntSid=%s))", sidstring);
+       switch (group_type) {
+               case SID_NAME_DOM_GRP:
+               case SID_NAME_ALIAS:
 
-       rc = ldapsam_search_one_group(ldap_state, filter, &result);
+                       if (!sid_peek_check_rid(get_global_sam_sid(), &sid, &result->rid)) {
+                               DEBUG(0, ("%s is not in our domain\n", sid_string_static(&sid)));
+                               return False;
+                       }
+                       break;
+       
+               case SID_NAME_WKN_GRP:
 
-       if (rc != LDAP_SUCCESS) {
-               return NT_STATUS_NO_SUCH_GROUP;
-       }
+                       if (!sid_peek_check_rid(&global_sid_Builtin, &sid, &result->rid)) {
 
-       ret = ldapsam_delete_entry(ldap_state, result, "sambaGroupMapping",
-                                  sam_group_attrs);
-       ldap_msgfree(result);
-       return ret;
+                               DEBUG(0, ("%s is not in builtin sid\n", sid_string_static(&sid)));
+                               return False;
+                       }
+                       break;
+
+               default:
+                       DEBUG(0,("unkown group type: %d\n", group_type));
+                       return False;
+       }
+       
+       return True;
 }
 
-static NTSTATUS ldapsam_setsamgrent(struct pdb_methods *my_methods,
-                                   BOOL update)
+static BOOL ldapsam_search_grouptype(struct pdb_methods *methods,
+                                    struct pdb_search *search,
+                                    enum SID_NAME_USE type)
 {
-       struct ldapsam_privates *ldap_state =
-               (struct ldapsam_privates *)my_methods->private_data;
-       const char *filter = "(objectClass=sambaGroupMapping)";
-       int rc;
-
-       rc = ldapsam_search(ldap_state, lp_ldap_suffix(),
-                           LDAP_SCOPE_SUBTREE, filter,
-                           group_attr, 0, &ldap_state->result);
+       struct ldapsam_privates *ldap_state = methods->private_data;
+       struct ldap_search_state *state;
 
-       if (rc != LDAP_SUCCESS) {
-               DEBUG(0, ("LDAP search failed: %s\n", ldap_err2string(rc)));
-               DEBUG(3, ("Query was: %s, %s\n", lp_ldap_suffix(), filter));
-               ldap_msgfree(ldap_state->result);
-               ldap_state->result = NULL;
-               return NT_STATUS_UNSUCCESSFUL;
+       state = TALLOC_P(search->mem_ctx, struct ldap_search_state);
+       if (state == NULL) {
+               DEBUG(0, ("talloc failed\n"));
+               return False;
        }
 
-       DEBUG(2, ("ldapsam_setsampwent: %d entries in the base!\n",
-                 ldap_count_entries(ldap_state->ldap_struct,
-                                    ldap_state->result)));
+       state->connection = ldap_state->smbldap_state;
+
+       state->base = talloc_strdup(search->mem_ctx, lp_ldap_group_suffix());
+       state->connection = ldap_state->smbldap_state;
+       state->scope = LDAP_SCOPE_SUBTREE;
+       state->filter = talloc_asprintf(search->mem_ctx,
+                                       "(&(objectclass=sambaGroupMapping)"
+                                       "(sambaGroupType=%d))", type);
+       state->attrs = talloc_attrs(search->mem_ctx, "cn", "sambaSid",
+                                   "displayName", "description", "sambaGroupType", NULL);
+       state->attrsonly = 0;
+       state->pagedresults_cookie = NULL;
+       state->entries = NULL;
+       state->group_type = type;
+       state->ldap2displayentry = ldapgroup2displayentry;
+
+       if ((state->filter == NULL) || (state->attrs == NULL)) {
+               DEBUG(0, ("talloc failed\n"));
+               return False;
+       }
 
-       ldap_state->entry = ldap_first_entry(ldap_state->ldap_struct,
-                                ldap_state->result);
-       ldap_state->index = 0;
+       search->private_data = state;
+       search->next_entry = ldapsam_search_next_entry;
+       search->search_end = ldapsam_search_end;
 
-       return NT_STATUS_OK;
+       return ldapsam_search_firstpage(search);
 }
 
-static void ldapsam_endsamgrent(struct pdb_methods *my_methods)
+static BOOL ldapsam_search_groups(struct pdb_methods *methods,
+                                 struct pdb_search *search)
 {
-       ldapsam_endsampwent(my_methods);
+       return ldapsam_search_grouptype(methods, search, SID_NAME_DOM_GRP);
 }
 
-static NTSTATUS ldapsam_getsamgrent(struct pdb_methods *my_methods,
-                                   GROUP_MAP *map)
+static BOOL ldapsam_search_aliases(struct pdb_methods *methods,
+                                  struct pdb_search *search,
+                                  const DOM_SID *sid)
 {
-       NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
-       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
-       BOOL bret = False;
-
-       /* The rebind proc needs this *HACK*.  We are not multithreaded, so
-          this will work, but it's not nice. */
-       static_ldap_state = ldap_state;
+       if (sid_check_is_domain(sid))
+               return ldapsam_search_grouptype(methods, search,
+                                               SID_NAME_ALIAS);
 
-       while (!bret) {
-               if (!ldap_state->entry)
-                       return ret;
-               
-               ldap_state->index++;
-               bret = init_group_from_ldap(ldap_state, map, ldap_state->entry);
-               
-               ldap_state->entry = ldap_next_entry(ldap_state->ldap_struct,
-                                           ldap_state->entry); 
-       }
+       if (sid_check_is_builtin(sid))
+               return ldapsam_search_grouptype(methods, search,
+                                               SID_NAME_WKN_GRP);
 
-       return NT_STATUS_OK;
+       DEBUG(5, ("Don't know SID %s\n", sid_string_static(sid)));
+       return False;
 }
 
-static NTSTATUS ldapsam_enum_group_mapping(struct pdb_methods *methods,
-                                          enum SID_NAME_USE sid_name_use,
-                                          GROUP_MAP **rmap, int *num_entries,
-                                          BOOL unix_only, BOOL with_priv)
+/**********************************************************************
+ Housekeeping
+ *********************************************************************/
+
+static void free_private_data(void **vp) 
 {
-       GROUP_MAP map;
-       GROUP_MAP *mapt;
-       int entries = 0;
-       NTSTATUS nt_status;
+       struct ldapsam_privates **ldap_state = (struct ldapsam_privates **)vp;
 
-       *num_entries = 0;
-       *rmap = NULL;
+       smbldap_free_struct(&(*ldap_state)->smbldap_state);
 
-       if (!NT_STATUS_IS_OK(ldapsam_setsamgrent(methods, False))) {
-               DEBUG(0, ("Unable to open passdb\n"));
-               return NT_STATUS_ACCESS_DENIED;
+       if ((*ldap_state)->result != NULL) {
+               ldap_msgfree((*ldap_state)->result);
+               (*ldap_state)->result = NULL;
        }
-
-       while (NT_STATUS_IS_OK(nt_status = ldapsam_getsamgrent(methods, &map))) {
-               if (sid_name_use != SID_NAME_UNKNOWN &&
-                   sid_name_use != map.sid_name_use) {
-                       DEBUG(11,("enum_group_mapping: group %s is not of the requested type\n", map.nt_name));
-                       continue;
-               }
-               if (unix_only==ENUM_ONLY_MAPPED && map.gid==-1) {
-                       DEBUG(11,("enum_group_mapping: group %s is non mapped\n", map.nt_name));
-                       continue;
-               }
-
-               mapt=(GROUP_MAP *)Realloc((*rmap), (entries+1)*sizeof(GROUP_MAP));
-               if (!mapt) {
-                       DEBUG(0,("enum_group_mapping: Unable to enlarge group map!\n"));
-                       SAFE_FREE(*rmap);
-                       return NT_STATUS_UNSUCCESSFUL;
-               }
-               else
-                       (*rmap) = mapt;
-
-               mapt[entries] = map;
-
-               entries += 1;
-
+       if ((*ldap_state)->domain_dn != NULL) {
+               SAFE_FREE((*ldap_state)->domain_dn);
        }
-       ldapsam_endsamgrent(methods);
 
-       *num_entries = entries;
+       *ldap_state = NULL;
 
-       return NT_STATUS_OK;
+       /* No need to free any further, as it is talloc()ed */
 }
 
-NTSTATUS pdb_init_ldapsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
+/**********************************************************************
+ Intitalise the parts of the pdb_context that are common to all pdb_ldap modes
+ *********************************************************************/
+
+static NTSTATUS pdb_init_ldapsam_common(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, 
+                                       const char *location)
 {
        NTSTATUS nt_status;
        struct ldapsam_privates *ldap_state;
@@ -2687,20 +4209,50 @@ NTSTATUS pdb_init_ldapsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, co
        (*pdb_method)->update_group_mapping_entry = ldapsam_update_group_mapping_entry;
        (*pdb_method)->delete_group_mapping_entry = ldapsam_delete_group_mapping_entry;
        (*pdb_method)->enum_group_mapping = ldapsam_enum_group_mapping;
+       (*pdb_method)->enum_group_members = ldapsam_enum_group_members;
+       (*pdb_method)->enum_group_memberships = ldapsam_enum_group_memberships;
+       (*pdb_method)->lookup_rids = ldapsam_lookup_rids;
 
-       /* TODO: Setup private data and free */
+       (*pdb_method)->get_account_policy = ldapsam_get_account_policy;
+       (*pdb_method)->set_account_policy = ldapsam_set_account_policy;
 
-       ldap_state = talloc_zero(pdb_context->mem_ctx, sizeof(struct ldapsam_privates));
+       (*pdb_method)->get_seq_num = ldapsam_get_seq_num;
 
+       /* TODO: Setup private data and free */
+
+       ldap_state = TALLOC_ZERO_P(pdb_context->mem_ctx, struct ldapsam_privates);
        if (!ldap_state) {
-               DEBUG(0, ("talloc() failed for ldapsam private_data!\n"));
+               DEBUG(0, ("pdb_init_ldapsam_common: talloc() failed for ldapsam private_data!\n"));
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       if (!NT_STATUS_IS_OK(nt_status = 
+                            smbldap_init(pdb_context->mem_ctx, location, 
+                                         &ldap_state->smbldap_state)));
+
+       ldap_state->domain_name = talloc_strdup(pdb_context->mem_ctx, get_global_sam_name());
+       if (!ldap_state->domain_name) {
                return NT_STATUS_NO_MEMORY;
        }
 
-       if (location) {
-               ldap_state->uri = talloc_strdup(pdb_context->mem_ctx, location);
+       (*pdb_method)->private_data = ldap_state;
+
+       (*pdb_method)->free_private_data = free_private_data;
+
+       return NT_STATUS_OK;
+}
+
+/**********************************************************************
+ Initialise the 'compat' mode for pdb_ldap
+ *********************************************************************/
+
+NTSTATUS pdb_init_ldapsam_compat(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
+{
+       NTSTATUS nt_status;
+       struct ldapsam_privates *ldap_state;
+
 #ifdef WITH_LDAP_SAMCONFIG
-       } else {
+       if (!location) {
                int ldap_port = lp_ldap_port();
                        
                /* remap default port if not using SSL (ie clear or TLS) */
@@ -2708,54 +4260,141 @@ NTSTATUS pdb_init_ldapsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, co
                        ldap_port = 389;
                }
 
-               ldap_state->uri = talloc_asprintf(pdb_context->mem_ctx, "%s://%s:%d", lp_ldap_ssl() == LDAP_SSL_ON ? "ldaps" : "ldap", lp_ldap_server(), ldap_port);
-               if (!ldap_state->uri) {
+               location = talloc_asprintf(pdb_context->mem_ctx, "%s://%s:%d", lp_ldap_ssl() == LDAP_SSL_ON ? "ldaps" : "ldap", lp_ldap_server(), ldap_port);
+               if (!location) {
                        return NT_STATUS_NO_MEMORY;
                }
-#else
-       } else {
-               ldap_state->uri = "ldap://localhost";
+       }
 #endif
+
+       if (!NT_STATUS_IS_OK(nt_status = pdb_init_ldapsam_common(pdb_context, pdb_method, location))) {
+               return nt_status;
        }
 
-       (*pdb_method)->private_data = ldap_state;
+       (*pdb_method)->name = "ldapsam_compat";
 
-       (*pdb_method)->free_private_data = free_private_data;
+       ldap_state = (*pdb_method)->private_data;
+       ldap_state->schema_ver = SCHEMAVER_SAMBAACCOUNT;
+
+       sid_copy(&ldap_state->domain_sid, get_global_sam_sid());
 
        return NT_STATUS_OK;
 }
 
-NTSTATUS pdb_init_ldapsam_nua(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
+/**********************************************************************
+ Initialise the normal mode for pdb_ldap
+ *********************************************************************/
+
+NTSTATUS pdb_init_ldapsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
 {
        NTSTATUS nt_status;
        struct ldapsam_privates *ldap_state;
-       uint32 low_nua_uid, high_nua_uid;
+       uint32 alg_rid_base;
+       pstring alg_rid_base_string;
+       LDAPMessage *result = NULL;
+       LDAPMessage *entry = NULL;
+       DOM_SID ldap_domain_sid;
+       DOM_SID secrets_domain_sid;
+       pstring domain_sid_string;
+       char *dn;
 
-       if (!NT_STATUS_IS_OK(nt_status = pdb_init_ldapsam(pdb_context, pdb_method, location))) {
+       if (!NT_STATUS_IS_OK(nt_status = pdb_init_ldapsam_common(pdb_context, pdb_method, location))) {
                return nt_status;
        }
 
-       (*pdb_method)->name = "ldapsam_nua";
+       (*pdb_method)->name = "ldapsam";
+
+       (*pdb_method)->add_aliasmem = ldapsam_add_aliasmem;
+       (*pdb_method)->del_aliasmem = ldapsam_del_aliasmem;
+       (*pdb_method)->enum_aliasmem = ldapsam_enum_aliasmem;
+       (*pdb_method)->enum_alias_memberships = ldapsam_alias_memberships;
+       (*pdb_method)->search_users = ldapsam_search_users;
+       (*pdb_method)->search_groups = ldapsam_search_groups;
+       (*pdb_method)->search_aliases = ldapsam_search_aliases;
 
        ldap_state = (*pdb_method)->private_data;
+       ldap_state->schema_ver = SCHEMAVER_SAMBASAMACCOUNT;
+
+       /* Try to setup the Domain Name, Domain SID, algorithmic rid base */
+       
+       nt_status = smbldap_search_domain_info(ldap_state->smbldap_state, &result, 
+                                              ldap_state->domain_name, True);
+       
+       if ( !NT_STATUS_IS_OK(nt_status) ) {
+               DEBUG(2, ("pdb_init_ldapsam: WARNING: Could not get domain info, nor add one to the domain\n"));
+               DEBUGADD(2, ("pdb_init_ldapsam: Continuing on regardless, will be unable to allocate new users/groups, \
+and will risk BDCs having inconsistant SIDs\n"));
+               sid_copy(&ldap_state->domain_sid, get_global_sam_sid());
+               return NT_STATUS_OK;
+       }
+
+       /* Given that the above might fail, everything below this must be optional */
        
-       ldap_state->permit_non_unix_accounts = True;
+       entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct, result);
+       if (!entry) {
+               DEBUG(0, ("pdb_init_ldapsam: Could not get domain info entry\n"));
+               ldap_msgfree(result);
+               return NT_STATUS_UNSUCCESSFUL;
+       }
 
-       if (!lp_non_unix_account_range(&low_nua_uid, &high_nua_uid)) {
-               DEBUG(0, ("cannot use ldapsam_nua without 'non unix account range' in smb.conf!\n"));
+       dn = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
+       if (!dn) {
                return NT_STATUS_UNSUCCESSFUL;
        }
 
-       ldap_state->low_nua_rid=fallback_pdb_uid_to_user_rid(low_nua_uid);
+       ldap_state->domain_dn = smb_xstrdup(dn);
+       ldap_memfree(dn);
+
+       if (smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                                get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID), 
+                                domain_sid_string)) {
+               BOOL found_sid;
+               if (!string_to_sid(&ldap_domain_sid, domain_sid_string)) {
+                       DEBUG(1, ("pdb_init_ldapsam: SID [%s] could not be read as a valid SID\n", domain_sid_string));
+                       return NT_STATUS_INVALID_PARAMETER;
+               }
+               found_sid = secrets_fetch_domain_sid(ldap_state->domain_name, &secrets_domain_sid);
+               if (!found_sid || !sid_equal(&secrets_domain_sid, &ldap_domain_sid)) {
+                       fstring new_sid_str, old_sid_str;
+                       DEBUG(1, ("pdb_init_ldapsam: Resetting SID for domain %s based on pdb_ldap results %s -> %s\n",
+                                 ldap_state->domain_name, 
+                                 sid_to_string(old_sid_str, &secrets_domain_sid),
+                                 sid_to_string(new_sid_str, &ldap_domain_sid)));
+                       
+                       /* reset secrets.tdb sid */
+                       secrets_store_domain_sid(ldap_state->domain_name, &ldap_domain_sid);
+                       DEBUG(1, ("New global sam SID: %s\n", sid_to_string(new_sid_str, get_global_sam_sid())));
+               }
+               sid_copy(&ldap_state->domain_sid, &ldap_domain_sid);
+       }
 
-       ldap_state->high_nua_rid=fallback_pdb_uid_to_user_rid(high_nua_uid);
+       if (smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
+                                get_attr_key2string( dominfo_attr_list, LDAP_ATTR_ALGORITHMIC_RID_BASE ),
+                                alg_rid_base_string)) {
+               alg_rid_base = (uint32)atol(alg_rid_base_string);
+               if (alg_rid_base != algorithmic_rid_base()) {
+                       DEBUG(0, ("The value of 'algorithmic RID base' has changed since the LDAP\n"
+                                 "database was initialised.  Aborting. \n"));
+                       ldap_msgfree(result);
+                       return NT_STATUS_UNSUCCESSFUL;
+               }
+       }
+       ldap_msgfree(result);
 
        return NT_STATUS_OK;
 }
 
-int pdb_ldap_init(void)
+NTSTATUS pdb_ldap_init(void)
 {
-       smb_register_passdb("ldapsam", pdb_init_ldapsam, PASSDB_INTERFACE_VERSION);
-       smb_register_passdb("ldapsam_nua", pdb_init_ldapsam_nua, PASSDB_INTERFACE_VERSION);
-       return True;
+       NTSTATUS nt_status;
+       if (!NT_STATUS_IS_OK(nt_status = smb_register_passdb(PASSDB_INTERFACE_VERSION, "ldapsam", pdb_init_ldapsam)))
+               return nt_status;
+
+       if (!NT_STATUS_IS_OK(nt_status = smb_register_passdb(PASSDB_INTERFACE_VERSION, "ldapsam_compat", pdb_init_ldapsam_compat)))
+               return nt_status;
+
+       /* Let pdb_nds register backends */
+       pdb_nds_init();
+
+       return NT_STATUS_OK;
 }