s3-passdb: add smb_create_user().
[ira/wip.git] / source3 / passdb / passdb.c
index 7d07e4cebaae21b7bffb6ca5d26380ca0784392d..fd715d201f91d7f655a18bac8bc296153cea3199 100644 (file)
@@ -3,23 +3,23 @@
    Password and authentication handling
    Copyright (C) Jeremy Allison                1996-2001
    Copyright (C) Luke Kenneth Casson Leighton  1996-1998
-   Copyright (C) Gerald (Jerry) Carter         2000-2001
+   Copyright (C) Gerald (Jerry) Carter         2000-2006
    Copyright (C) Andrew Bartlett               2001-2002
    Copyright (C) Simo Sorce                    2003
-      
+   Copyright (C) Volker Lendecke               2006
+
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
-   
+
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
-   
+
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "includes.h"
 #define DBGC_CLASS DBGC_PASSDB
 
 /******************************************************************
- get the default domain/netbios name to be used when 
- testing authentication.  For example, if you connect
- to a Windows member server using a bogus domain name, the
- Windows box will map the BOGUS\user to DOMAIN\user.  A 
- standalone box will map to WKS\user.
+ Get the default domain/netbios name to be used when
+ testing authentication.
+
+ LEGACY: this function provides the legacy domain mapping used with
+        the lp_map_untrusted_to_domain() parameter
 ******************************************************************/
 
-const char *get_default_sam_name(void)
+const char *my_sam_name(void)
 {
-       /* standalone servers can only use the local netbios name */
-       if ( lp_server_role() == ROLE_STANDALONE )
-               return global_myname();
+       /* Standalone servers can only use the local netbios name */
+       if ( lp_server_role() == ROLE_STANDALONE )
+               return global_myname();
 
-       /* Windows domain members default to the DOMAIN
-          name when not specified */
-       return lp_workgroup();
+       /* Default to the DOMAIN name when not specified */
+       return lp_workgroup();
 }
 
-/************************************************************
- Fill the SAM_ACCOUNT with default values.
- ***********************************************************/
+/**********************************************************************
+***********************************************************************/
 
-void pdb_fill_default_sam(SAM_ACCOUNT *user)
+static int samu_destroy(struct samu *user) 
 {
-       ZERO_STRUCT(user->private_u); /* Don't touch the talloc context */
+       data_blob_clear_free( &user->lm_pw );
+       data_blob_clear_free( &user->nt_pw );
 
-       /* no initial methods */
-       user->methods = NULL;
+       if ( user->plaintext_pw )
+               memset( user->plaintext_pw, 0x0, strlen(user->plaintext_pw) );
 
-        /* Don't change these timestamp settings without a good reason.
-           They are important for NT member server compatibility. */
-
-       user->private_u.logon_time            = (time_t)0;
-       user->private_u.pass_last_set_time    = (time_t)0;
-       user->private_u.pass_can_change_time  = (time_t)0;
-       user->private_u.logoff_time           = 
-       user->private_u.kickoff_time          = 
-       user->private_u.pass_must_change_time = get_time_t_max();
-       user->private_u.fields_present        = 0x00ffffff;
-       user->private_u.logon_divs = 168;       /* hours per week */
-       user->private_u.hours_len = 21;                 /* 21 times 8 bits = 168 */
-       memset(user->private_u.hours, 0xff, user->private_u.hours_len); /* available at all hours */
-       user->private_u.bad_password_count = 0;
-       user->private_u.logon_count = 0;
-       user->private_u.unknown_6 = 0x000004ec; /* don't know */
-
-       /* Some parts of samba strlen their pdb_get...() returns, 
-          so this keeps the interface unchanged for now. */
-          
-       user->private_u.username = "";
-       user->private_u.domain = "";
-       user->private_u.nt_username = "";
-       user->private_u.full_name = "";
-       user->private_u.home_dir = "";
-       user->private_u.logon_script = "";
-       user->private_u.profile_path = "";
-       user->private_u.acct_desc = "";
-       user->private_u.workstations = "";
-       user->private_u.unknown_str = "";
-       user->private_u.munged_dial = "";
-
-       user->private_u.plaintext_pw = NULL;
-
-       /* 
-          Unless we know otherwise have a Account Control Bit
-          value of 'normal user'.  This helps User Manager, which
-          asks for a filtered list of users.
-       */
-
-       user->private_u.acct_ctrl = ACB_NORMAL;
-}      
-
-static void destroy_pdb_talloc(SAM_ACCOUNT **user) 
-{
-       if (*user) {
-               data_blob_clear_free(&((*user)->private_u.lm_pw));
-               data_blob_clear_free(&((*user)->private_u.nt_pw));
-
-               if((*user)->private_u.plaintext_pw!=NULL)
-                       memset((*user)->private_u.plaintext_pw,'\0',strlen((*user)->private_u.plaintext_pw));
-               talloc_destroy((*user)->mem_ctx);
-               *user = NULL;
-       }
+       return 0;
 }
 
-
 /**********************************************************************
- Allocates memory and initialises a struct sam_passwd on supplied mem_ctx.
+ generate a new struct samuser
 ***********************************************************************/
 
-NTSTATUS pdb_init_sam_talloc(TALLOC_CTX *mem_ctx, SAM_ACCOUNT **user)
+struct samu *samu_new( TALLOC_CTX *ctx )
 {
-       if (*user != NULL) {
-               DEBUG(0,("pdb_init_sam_talloc: SAM_ACCOUNT was non NULL\n"));
-#if 0
-               smb_panic("non-NULL pointer passed to pdb_init_sam\n");
-#endif
-               return NT_STATUS_UNSUCCESSFUL;
-       }
-
-       if (!mem_ctx) {
-               DEBUG(0,("pdb_init_sam_talloc: mem_ctx was NULL!\n"));
-               return NT_STATUS_UNSUCCESSFUL;
-       }
+       struct samu *user;
 
-       *user=TALLOC_P(mem_ctx, SAM_ACCOUNT);
-
-       if (*user==NULL) {
-               DEBUG(0,("pdb_init_sam_talloc: error while allocating memory\n"));
-               return NT_STATUS_NO_MEMORY;
+       if ( !(user = TALLOC_ZERO_P( ctx, struct samu )) ) {
+               DEBUG(0,("samuser_new: Talloc failed!\n"));
+               return NULL;
        }
 
-       (*user)->mem_ctx = mem_ctx;
+       talloc_set_destructor( user, samu_destroy );
 
-       (*user)->free_fn = NULL;
+       /* no initial methods */
 
-       pdb_fill_default_sam(*user);
-       
-       return NT_STATUS_OK;
-}
+       user->methods = NULL;
 
+        /* Don't change these timestamp settings without a good reason.
+           They are important for NT member server compatibility. */
 
-/*************************************************************
- Allocates memory and initialises a struct sam_passwd.
- ************************************************************/
+       user->logon_time            = (time_t)0;
+       user->pass_last_set_time    = (time_t)0;
+       user->pass_can_change_time  = (time_t)0;
+       user->logoff_time           = get_time_t_max();
+       user->kickoff_time          = get_time_t_max();
+       user->pass_must_change_time = get_time_t_max();
+       user->fields_present        = 0x00ffffff;
+       user->logon_divs = 168;         /* hours per week */
+       user->hours_len = 21;           /* 21 times 8 bits = 168 */
+       memset(user->hours, 0xff, user->hours_len); /* available at all hours */
+       user->bad_password_count = 0;
+       user->logon_count = 0;
+       user->unknown_6 = 0x000004ec; /* don't know */
 
-NTSTATUS pdb_init_sam(SAM_ACCOUNT **user)
-{
-       TALLOC_CTX *mem_ctx;
-       NTSTATUS nt_status;
-       
-       mem_ctx = talloc_init("passdb internal SAM_ACCOUNT allocation");
+       /* Some parts of samba strlen their pdb_get...() returns, 
+          so this keeps the interface unchanged for now. */
 
-       if (!mem_ctx) {
-               DEBUG(0,("pdb_init_sam: error while doing talloc_init()\n"));
-               return NT_STATUS_NO_MEMORY;
-       }
+       user->username = "";
+       user->domain = "";
+       user->nt_username = "";
+       user->full_name = "";
+       user->home_dir = "";
+       user->logon_script = "";
+       user->profile_path = "";
+       user->acct_desc = "";
+       user->workstations = "";
+       user->comment = "";
+       user->munged_dial = "";
+
+       user->plaintext_pw = NULL;
+
+       /* Unless we know otherwise have a Account Control Bit
+          value of 'normal user'.  This helps User Manager, which
+          asks for a filtered list of users. */
 
-       if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_talloc(mem_ctx, user))) {
-               talloc_destroy(mem_ctx);
-               return nt_status;
-       }
-       
-       (*user)->free_fn = destroy_pdb_talloc;
+       user->acct_ctrl = ACB_NORMAL;
 
-       return NT_STATUS_OK;
+       return user;
 }
 
-/**************************************************************************
- * This function will take care of all the steps needed to correctly
- * allocate and set the user SID, please do use this function to create new
- * users, messing with SIDs is not good.
- *
- * account_data must be provided initialized, pwd may be null.
- *                                                                     SSS
- ***************************************************************************/
+/*********************************************************************
+ Initialize a struct samu from a struct passwd including the user 
+ and group SIDs.  The *user structure is filled out with the Unix
+ attributes and a user SID.
+*********************************************************************/
 
-static NTSTATUS pdb_set_sam_sids(SAM_ACCOUNT *account_data, const struct passwd *pwd)
+static NTSTATUS samu_set_unix_internal(struct samu *user, const struct passwd *pwd, bool create)
 {
        const char *guest_account = lp_guestaccount();
-       GROUP_MAP map;
-       BOOL ret;
-       
-       if (!account_data || !pwd) {
-               return NT_STATUS_INVALID_PARAMETER;
-       }
+       const char *domain = global_myname();
+       uint32 urid;
 
-       /* this is a hack this thing should not be set
-          this way --SSS */
-       if (!(guest_account && *guest_account)) {
-               DEBUG(1, ("NULL guest account!?!?\n"));
-               return NT_STATUS_UNSUCCESSFUL;
-       } else {
-               /* Ensure this *must* be set right */
-               if (strcmp(pwd->pw_name, guest_account) == 0) {
-                       if (!pdb_set_user_sid_from_rid(account_data, DOMAIN_USER_RID_GUEST, PDB_DEFAULT)) {
-                               return NT_STATUS_UNSUCCESSFUL;
-                       }
-                       if (!pdb_set_group_sid_from_rid(account_data, DOMAIN_GROUP_RID_GUESTS, PDB_DEFAULT)) {
-                               return NT_STATUS_UNSUCCESSFUL;
-                       }
-                       return NT_STATUS_OK;
-               }
-       }
-
-       if (!pdb_set_user_sid_from_rid(account_data, algorithmic_pdb_uid_to_user_rid(pwd->pw_uid), PDB_SET)) {
-               DEBUG(0,("Can't set User SID from RID!\n"));
-               return NT_STATUS_INVALID_PARAMETER;
-       }
-       
-       /* call the mapping code here */
-       become_root();
-       ret = pdb_getgrgid(&map, pwd->pw_gid);
-       unbecome_root();
-       
-       if( ret ) {
-               if (!pdb_set_group_sid(account_data, &map.sid, PDB_SET)){
-                       DEBUG(0,("Can't set Group SID!\n"));
-                       return NT_STATUS_INVALID_PARAMETER;
-               }
-       } 
-       else {
-               if (!pdb_set_group_sid_from_rid(account_data, pdb_gid_to_group_rid(pwd->pw_gid), PDB_SET)) {
-                       DEBUG(0,("Can't set Group SID\n"));
-                       return NT_STATUS_INVALID_PARAMETER;
-               }
+       if ( !pwd ) {
+               return NT_STATUS_NO_SUCH_USER;
        }
 
-       return NT_STATUS_OK;
-}
-
-/*************************************************************
- Initialises a struct sam_passwd with sane values.
- ************************************************************/
-
-NTSTATUS pdb_fill_sam_pw(SAM_ACCOUNT *sam_account, const struct passwd *pwd)
-{
-       NTSTATUS ret;
-
-       if (!pwd) {
-               return NT_STATUS_UNSUCCESSFUL;
-       }
+       /* Basic properties based upon the Unix account information */
 
-       pdb_fill_default_sam(sam_account);
+       pdb_set_username(user, pwd->pw_name, PDB_SET);
+       pdb_set_fullname(user, pwd->pw_gecos, PDB_SET);
+       pdb_set_domain (user, get_global_sam_name(), PDB_DEFAULT);
+#if 0
+       /* This can lead to a primary group of S-1-22-2-XX which 
+          will be rejected by other parts of the Samba code. 
+          Rely on pdb_get_group_sid() to "Do The Right Thing" (TM)  
+          --jerry */
 
-       pdb_set_username(sam_account, pwd->pw_name, PDB_SET);
-       pdb_set_fullname(sam_account, pwd->pw_gecos, PDB_SET);
+       gid_to_sid(&group_sid, pwd->pw_gid);
+       pdb_set_group_sid(user, &group_sid, PDB_SET);
+#endif
 
-       pdb_set_unix_homedir(sam_account, pwd->pw_dir, PDB_SET);
+       /* save the password structure for later use */
 
-       pdb_set_domain (sam_account, get_global_sam_name(), PDB_DEFAULT);
-       
-       /* When we get a proper uid -> SID and SID -> uid allocation
-          mechinism, we should call it here.  
-          
-          We can't just set this to 0 or allow it only to be filled
-          in when added to the backend, because the user's SID 
-          may already be in security descriptors etc.
-          
-          -- abartlet 11-May-02
-       */
+       user->unix_pw = tcopy_passwd( user, pwd );
 
-       ret = pdb_set_sam_sids(sam_account, pwd);
-       if (!NT_STATUS_IS_OK(ret)) return ret;
+       /* Special case for the guest account which must have a RID of 501 */
 
-       /* check if this is a user account or a machine account */
-       if (pwd->pw_name[strlen(pwd->pw_name)-1] != '$')
-       {
-               pdb_set_profile_path(sam_account, 
-                                    talloc_sub_specified((sam_account)->mem_ctx, 
-                                                           lp_logon_path(), 
-                                                           pwd->pw_name, global_myname(), 
-                                                           pwd->pw_uid, pwd->pw_gid), 
-                                    PDB_DEFAULT);
-               
-               pdb_set_homedir(sam_account, 
-                               talloc_sub_specified((sam_account)->mem_ctx, 
-                                                      lp_logon_home(),
-                                                      pwd->pw_name, global_myname(), 
-                                                      pwd->pw_uid, pwd->pw_gid),
-                               PDB_DEFAULT);
-               
-               pdb_set_dir_drive(sam_account, 
-                                 talloc_sub_specified((sam_account)->mem_ctx, 
-                                                        lp_logon_drive(),
-                                                        pwd->pw_name, global_myname(), 
-                                                        pwd->pw_uid, pwd->pw_gid),
-                                 PDB_DEFAULT);
-               
-               pdb_set_logon_script(sam_account, 
-                                    talloc_sub_specified((sam_account)->mem_ctx, 
-                                                           lp_logon_script(),
-                                                           pwd->pw_name, global_myname(), 
-                                                           pwd->pw_uid, pwd->pw_gid), 
-                                    PDB_DEFAULT);
-               if (!pdb_set_acct_ctrl(sam_account, ACB_NORMAL, PDB_DEFAULT)) {
-                       DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n", pwd->pw_name));
-                       return NT_STATUS_UNSUCCESSFUL;
-               }
-       } else {
-               if (!pdb_set_acct_ctrl(sam_account, ACB_WSTRUST, PDB_DEFAULT)) {
-                       DEBUG(1, ("Failed to set 'trusted workstation account' flags for user %s.\n", pwd->pw_name));
-                       return NT_STATUS_UNSUCCESSFUL;
+       if ( strequal( pwd->pw_name, guest_account ) ) {
+               if ( !pdb_set_user_sid_from_rid(user, DOMAIN_USER_RID_GUEST, PDB_DEFAULT)) {
+                       return NT_STATUS_NO_SUCH_USER;
                }
+               return NT_STATUS_OK;
        }
-       return NT_STATUS_OK;
-}
 
+       /* Non-guest accounts...Check for a workstation or user account */
 
-/*************************************************************
- Initialises a struct sam_passwd with sane values.
- ************************************************************/
+       if (pwd->pw_name[strlen(pwd->pw_name)-1] == '$') {
+               /* workstation */
 
-NTSTATUS pdb_init_sam_pw(SAM_ACCOUNT **new_sam_acct, const struct passwd *pwd)
-{
-       NTSTATUS nt_status;
+               if (!pdb_set_acct_ctrl(user, ACB_WSTRUST, PDB_DEFAULT)) {
+                       DEBUG(1, ("Failed to set 'workstation account' flags for user %s.\n", 
+                               pwd->pw_name));
+                       return NT_STATUS_INVALID_COMPUTER_NAME;
+               }       
+       } 
+       else {
+               /* user */
 
-       if (!pwd) {
-               new_sam_acct = NULL;
-               return NT_STATUS_INVALID_PARAMETER;
-       }
+               if (!pdb_set_acct_ctrl(user, ACB_NORMAL, PDB_DEFAULT)) {
+                       DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n", 
+                               pwd->pw_name));
+                       return NT_STATUS_INVALID_ACCOUNT_NAME;
+               }
 
-       if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(new_sam_acct))) {
-               new_sam_acct = NULL;
-               return nt_status;
-       }
+               /* set some basic attributes */
 
-       if (!NT_STATUS_IS_OK(nt_status = pdb_fill_sam_pw(*new_sam_acct, pwd))) {
-               pdb_free_sam(new_sam_acct);
-               new_sam_acct = NULL;
-               return nt_status;
+               pdb_set_profile_path(user, talloc_sub_specified(user, 
+                       lp_logon_path(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid), 
+                       PDB_DEFAULT);           
+               pdb_set_homedir(user, talloc_sub_specified(user, 
+                       lp_logon_home(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
+                       PDB_DEFAULT);
+               pdb_set_dir_drive(user, talloc_sub_specified(user, 
+                       lp_logon_drive(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
+                       PDB_DEFAULT);
+               pdb_set_logon_script(user, talloc_sub_specified(user, 
+                       lp_logon_script(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid), 
+                       PDB_DEFAULT);
        }
 
-       return NT_STATUS_OK;
-}
-
-
-/*************************************************************
- Initialises a SAM_ACCOUNT ready to add a new account, based
- on the UNIX user.  Pass in a RID if you have one
- ************************************************************/
-
-NTSTATUS pdb_init_sam_new(SAM_ACCOUNT **new_sam_acct, const char *username,
-                          uint32 rid)
-{
-       NTSTATUS        nt_status = NT_STATUS_NO_MEMORY;
-       struct passwd   *pwd;
-       BOOL            ret;
-       
-       pwd = Get_Pwnam(username);
-
-       if (!pwd) 
-               return NT_STATUS_NO_SUCH_USER;
-       
-       if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(new_sam_acct, pwd))) {
-               *new_sam_acct = NULL;
-               return nt_status;
-       }
-       
-       /* see if we need to generate a new rid using the 2.2 algorithm */
-       if ( rid == 0 && lp_enable_rid_algorithm() ) {
-               DEBUG(10,("pdb_init_sam_new: no RID specified.  Generating one via old algorithm\n"));
-               rid = algorithmic_pdb_uid_to_user_rid(pwd->pw_uid);
-       }
-       
-       /* set the new SID */
-       
-       ret = pdb_set_user_sid_from_rid( *new_sam_acct, rid, PDB_SET );
-        
-       return (ret ? NT_STATUS_OK : NT_STATUS_NO_SUCH_USER);
-}
+       /* Now deal with the user SID.  If we have a backend that can generate 
+          RIDs, then do so.  But sometimes the caller just wanted a structure 
+          initialized and will fill in these fields later (such as from a 
+          netr_SamInfo3 structure) */
 
+       if ( create && !pdb_rid_algorithm() ) {
+               uint32 user_rid;
+               DOM_SID user_sid;
 
-/**
- * Free the contets of the SAM_ACCOUNT, but not the structure.
- *
- * Also wipes the LM and NT hashes and plaintext password from 
- * memory.
- *
- * @param user SAM_ACCOUNT to free members of.
- **/
-
-static void pdb_free_sam_contents(SAM_ACCOUNT *user)
-{
+               if ( !pdb_new_rid( &user_rid ) ) {
+                       DEBUG(3, ("Could not allocate a new RID\n"));
+                       return NT_STATUS_ACCESS_DENIED;
+               }
 
-       /* Kill off sensitive data.  Free()ed by the
-          talloc mechinism */
+               sid_copy( &user_sid, get_global_sam_sid() );
+               sid_append_rid( &user_sid, user_rid );
 
-       data_blob_clear_free(&(user->private_u.lm_pw));
-       data_blob_clear_free(&(user->private_u.nt_pw));
-       if (user->private_u.plaintext_pw!=NULL)
-               memset(user->private_u.plaintext_pw,'\0',strlen(user->private_u.plaintext_pw));
+               if ( !pdb_set_user_sid(user, &user_sid, PDB_SET) ) {
+                       DEBUG(3, ("pdb_set_user_sid failed\n"));
+                       return NT_STATUS_INTERNAL_ERROR;
+               }
 
-       if (user->private_u.backend_private_data && user->private_u.backend_private_data_free_fn) {
-               user->private_u.backend_private_data_free_fn(&user->private_u.backend_private_data);
+               return NT_STATUS_OK;
        }
-}
 
+       /* generate a SID for the user with the RID algorithm */
 
-/************************************************************
- Reset the SAM_ACCOUNT and free the NT/LM hashes.
- ***********************************************************/
+       urid = algorithmic_pdb_uid_to_user_rid( user->unix_pw->pw_uid );
 
-NTSTATUS pdb_reset_sam(SAM_ACCOUNT *user)
-{
-       if (user == NULL) {
-               DEBUG(0,("pdb_reset_sam: SAM_ACCOUNT was NULL\n"));
-#if 0
-               smb_panic("NULL pointer passed to pdb_free_sam\n");
-#endif
-               return NT_STATUS_UNSUCCESSFUL;
+       if ( !pdb_set_user_sid_from_rid( user, urid, PDB_SET) ) {
+               return NT_STATUS_INTERNAL_ERROR;
        }
-       
-       pdb_free_sam_contents(user);
-
-       pdb_fill_default_sam(user);
 
        return NT_STATUS_OK;
 }
 
+/********************************************************************
+ Set the Unix user attributes
+********************************************************************/
 
-/************************************************************
- Free the SAM_ACCOUNT and the member pointers.
- ***********************************************************/
-
-NTSTATUS pdb_free_sam(SAM_ACCOUNT **user)
+NTSTATUS samu_set_unix(struct samu *user, const struct passwd *pwd)
 {
-       if (*user == NULL) {
-               DEBUG(0,("pdb_free_sam: SAM_ACCOUNT was NULL\n"));
-#if 0
-               smb_panic("NULL pointer passed to pdb_free_sam\n");
-#endif
-               return NT_STATUS_UNSUCCESSFUL;
-       }
-
-       pdb_free_sam_contents(*user);
-       
-       if ((*user)->free_fn) {
-               (*user)->free_fn(user);
-       }
+       return samu_set_unix_internal( user, pwd, False );
+}
 
-       return NT_STATUS_OK;    
+NTSTATUS samu_alloc_rid_unix(struct samu *user, const struct passwd *pwd)
+{
+       return samu_set_unix_internal( user, pwd, True );
 }
 
 /**********************************************************
@@ -458,9 +257,10 @@ NTSTATUS pdb_free_sam(SAM_ACCOUNT **user)
  null). length *MUST BE MORE THAN 2* !
  **********************************************************/
 
-char *pdb_encode_acct_ctrl(uint16 acct_ctrl, size_t length)
+char *pdb_encode_acct_ctrl(uint32_t acct_ctrl, size_t length)
 {
-       static fstring acct_str;
+       fstring acct_str;
+       char *result;
 
        size_t i = 0;
 
@@ -487,17 +287,19 @@ char *pdb_encode_acct_ctrl(uint16 acct_ctrl, size_t length)
        acct_str[i++] = ']';
        acct_str[i++] = '\0';
 
-       return acct_str;
+       result = talloc_strdup(talloc_tos(), acct_str);
+       SMB_ASSERT(result != NULL);
+       return result;
 }     
 
 /**********************************************************
  Decode the account control bits from a string.
  **********************************************************/
 
-uint16 pdb_decode_acct_ctrl(const char *p)
+uint32_t pdb_decode_acct_ctrl(const char *p)
 {
-       uint16 acct_ctrl = 0;
-       BOOL finished = False;
+       uint32_t acct_ctrl = 0;
+       bool finished = false;
 
        /*
         * Check if the account type bits have been encoded after the
@@ -525,7 +327,7 @@ uint16 pdb_decode_acct_ctrl(const char *p)
                        case '\n':
                        case '\0': 
                        case ']':
-                       default:  { finished = True; }
+                       default:  { finished = true; }
                }
        }
 
@@ -536,7 +338,7 @@ uint16 pdb_decode_acct_ctrl(const char *p)
  Routine to set 32 hex password characters from a 16 byte array.
 **************************************************************/
 
-void pdb_sethexpwd(char *p, const unsigned char *pwd, uint16 acct_ctrl)
+void pdb_sethexpwd(char p[33], const unsigned char *pwd, uint32 acct_ctrl)
 {
        if (pwd != NULL) {
                int i;
@@ -544,9 +346,9 @@ void pdb_sethexpwd(char *p, const unsigned char *pwd, uint16 acct_ctrl)
                        slprintf(&p[i*2], 3, "%02X", pwd[i]);
        } else {
                if (acct_ctrl & ACB_PWNOTREQ)
-                       safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 33);
+                       safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 32);
                else
-                       safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 33);
+                       safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 32);
        }
 }
 
@@ -555,32 +357,32 @@ void pdb_sethexpwd(char *p, const unsigned char *pwd, uint16 acct_ctrl)
  into a 16 byte array.
 **************************************************************/
 
-BOOL pdb_gethexpwd(const char *p, unsigned char *pwd)
+bool pdb_gethexpwd(const char *p, unsigned char *pwd)
 {
        int i;
        unsigned char   lonybble, hinybble;
        const char      *hexchars = "0123456789ABCDEF";
        char           *p1, *p2;
-       
+
        if (!p)
-               return (False);
-       
+               return false;
+
        for (i = 0; i < 32; i += 2) {
-               hinybble = toupper(p[i]);
-               lonybble = toupper(p[i + 1]);
+               hinybble = toupper_ascii(p[i]);
+               lonybble = toupper_ascii(p[i + 1]);
 
                p1 = strchr(hexchars, hinybble);
                p2 = strchr(hexchars, lonybble);
 
                if (!p1 || !p2)
-                       return (False);
+                       return false;
 
                hinybble = PTR_DIFF(p1, hexchars);
                lonybble = PTR_DIFF(p2, hexchars);
 
                pwd[i / 2] = (hinybble << 4) | lonybble;
        }
-       return (True);
+       return true;
 }
 
 /*************************************************************
@@ -604,7 +406,7 @@ void pdb_sethexhours(char *p, const unsigned char *hours)
  into a 21 byte array.
 **************************************************************/
 
-BOOL pdb_gethexhours(const char *p, unsigned char *hours)
+bool pdb_gethexhours(const char *p, unsigned char *hours)
 {
        int i;
        unsigned char   lonybble, hinybble;
@@ -616,8 +418,8 @@ BOOL pdb_gethexhours(const char *p, unsigned char *hours)
        }
 
        for (i = 0; i < 42; i += 2) {
-               hinybble = toupper(p[i]);
-               lonybble = toupper(p[i + 1]);
+               hinybble = toupper_ascii(p[i]);
+               lonybble = toupper_ascii(p[i + 1]);
 
                p1 = strchr(hexchars, hinybble);
                p2 = strchr(hexchars, lonybble);
@@ -634,12 +436,12 @@ BOOL pdb_gethexhours(const char *p, unsigned char *hours)
        return (True);
 }
 
+/********************************************************************
+********************************************************************/
+
 int algorithmic_rid_base(void)
 {
-       static int rid_offset = 0;
-
-       if (rid_offset != 0)
-               return rid_offset;
+       int rid_offset;
 
        rid_offset = lp_algorithmic_rid_base();
 
@@ -666,6 +468,11 @@ uid_t algorithmic_pdb_user_rid_to_uid(uint32 user_rid)
        return (uid_t)(((user_rid & (~USER_RID_TYPE)) - rid_offset)/RID_MULTIPLIER);
 }
 
+uid_t max_algorithmic_uid(void)
+{
+       return algorithmic_pdb_user_rid_to_uid(0xfffffffe);
+}
+
 /*******************************************************************
  converts UNIX uid to an NT User RID.
  ********************************************************************/
@@ -686,6 +493,11 @@ gid_t pdb_group_rid_to_gid(uint32 group_rid)
        return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
 }
 
+gid_t max_algorithmic_gid(void)
+{
+       return pdb_group_rid_to_gid(0xffffffff);
+}
+
 /*******************************************************************
  converts NT Group RID to a UNIX uid.
  
@@ -694,7 +506,7 @@ gid_t pdb_group_rid_to_gid(uint32 group_rid)
  there is not anymore a direct link between the gid and the rid.
  ********************************************************************/
 
-uint32 pdb_gid_to_group_rid(gid_t gid)
+uint32 algorithmic_pdb_gid_to_group_rid(gid_t gid)
 {
        int rid_offset = algorithmic_rid_base();
        return (((((uint32)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE);
@@ -704,7 +516,7 @@ uint32 pdb_gid_to_group_rid(gid_t gid)
  Decides if a RID is a well known RID.
  ********************************************************************/
 
-static BOOL pdb_rid_is_well_known(uint32 rid)
+static bool rid_is_well_known(uint32 rid)
 {
        /* Not using rid_offset here, because this is the actual
           NT fixed value (1000) */
@@ -716,9 +528,9 @@ static BOOL pdb_rid_is_well_known(uint32 rid)
  Decides if a RID is a user or group RID.
  ********************************************************************/
 
-BOOL algorithmic_pdb_rid_is_user(uint32 rid)
+bool algorithmic_pdb_rid_is_user(uint32 rid)
 {
-       if(pdb_rid_is_well_known(rid)) {
+       if ( rid_is_well_known(rid) ) {
                /*
                 * The only well known user RIDs are DOMAIN_USER_RID_ADMIN
                 * and DOMAIN_USER_RID_GUEST.
@@ -732,209 +544,84 @@ BOOL algorithmic_pdb_rid_is_user(uint32 rid)
 }
 
 /*******************************************************************
- Convert a rid into a name. Used in the lookup SID rpc.
+ Convert a name into a SID. Used in the lookup name rpc.
  ********************************************************************/
 
-BOOL local_lookup_rid(uint32 rid, char *name, enum SID_NAME_USE *psid_name_use)
+bool lookup_global_sam_name(const char *name, int flags, uint32_t *rid,
+                           enum lsa_SidType *type)
 {
-       SAM_ACCOUNT *sam_account = NULL;
        GROUP_MAP map;
-       BOOL ret;
-       DOM_SID sid;
-
-       *psid_name_use = SID_NAME_UNKNOWN;
-       
-       DEBUG(5,("local_lookup_rid: looking up RID %u.\n", (unsigned int)rid));
-
-       sid_copy(&sid, get_global_sam_sid());
-       sid_append_rid(&sid, rid);
-       
-       /* see if the passdb can help us with the name of the user */
-       if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_account))) {
-               return False;
-       }
+       bool ret;
 
-       /* BEING ROOT BLLOCK */
-       become_root();
-       if (pdb_getsampwsid(sam_account, &sid)) {
-               unbecome_root();                        /* -----> EXIT BECOME_ROOT() */
-               fstrcpy(name, pdb_get_username(sam_account));
-               *psid_name_use = SID_NAME_USER;
-
-               pdb_free_sam(&sam_account);
-                       
-               return True;
-       }
-       pdb_free_sam(&sam_account);
-       
-       ret = pdb_getgrsid(&map, sid);
-       unbecome_root();
-       /* END BECOME_ROOT BLOCK */
-       
-       if ( ret ) {
-               if (map.gid!=(gid_t)-1) {
-                       DEBUG(5,("local_lookup_rid: mapped group %s to gid %u\n", map.nt_name, (unsigned int)map.gid));
-               } else {
-                       DEBUG(5,("local_lookup_rid: mapped group %s to no unix gid.  Returning name.\n", map.nt_name));
-               }
+       /* Windows treats "MACHINE\None" as a special name for 
+          rid 513 on non-DCs.  You cannot create a user or group
+          name "None" on Windows.  You will get an error that 
+          the group already exists. */
 
-               fstrcpy(name, map.nt_name);
-               *psid_name_use = map.sid_name_use;
-               return True;
-       }
+       if ( strequal( name, "None" ) ) {
+               *rid = DOMAIN_GROUP_RID_USERS;
+               *type = SID_NAME_DOM_GRP;
 
-       if (rid == DOMAIN_USER_RID_ADMIN) {
-               *psid_name_use = SID_NAME_USER;
-               fstrcpy(name, "Administrator");
                return True;
        }
 
-       if (algorithmic_pdb_rid_is_user(rid)) {
-               uid_t uid;
-               struct passwd *pw = NULL;
-
-               DEBUG(5, ("assuming RID %u is a user\n", (unsigned)rid));
-
-                       uid = algorithmic_pdb_user_rid_to_uid(rid);
-               pw = sys_getpwuid( uid );
-               
-               DEBUG(5,("local_lookup_rid: looking up uid %u %s\n", (unsigned int)uid,
-                        pw ? "succeeded" : "failed" ));
-                        
-               if ( !pw )
-                       fstr_sprintf(name, "unix_user.%u", (unsigned int)uid);  
-               else 
-                       fstrcpy( name, pw->pw_name );
-                       
-               DEBUG(5,("local_lookup_rid: found user %s for rid %u\n", name,
-                        (unsigned int)rid ));
-                        
-               *psid_name_use = SID_NAME_USER;
-               
-               return ( pw != NULL );
-       } else {
-               gid_t gid;
-               struct group *gr; 
-                       
-               DEBUG(5, ("assuming RID %u is a group\n", (unsigned)rid));
-
-               gid = pdb_group_rid_to_gid(rid);
-               gr = getgrgid(gid);
-                       
-               DEBUG(5,("local_lookup_rid: looking up gid %u %s\n", (unsigned int)gid,
-                        gr ? "succeeded" : "failed" ));
-                       
-               if( !gr )
-                       fstr_sprintf(name, "unix_group.%u", (unsigned int)gid);
-               else
-                       fstrcpy( name, gr->gr_name);
-                       
-               DEBUG(5,("local_lookup_rid: found group %s for rid %u\n", name,
-                        (unsigned int)rid ));
-               
-               /* assume algorithmic groups are domain global groups */
-               
-               *psid_name_use = SID_NAME_DOM_GRP;
-               
-               return ( gr != NULL );
-       }
-}
-
-/*******************************************************************
- Convert a name into a SID. Used in the lookup name rpc.
- ********************************************************************/
-
-BOOL local_lookup_name(const char *c_user, DOM_SID *psid, enum SID_NAME_USE *psid_name_use)
-{
-       DOM_SID local_sid;
-       DOM_SID sid;
-       fstring user;
-       SAM_ACCOUNT *sam_account = NULL;
-       struct group *grp;
-       GROUP_MAP map;
+       /* LOOKUP_NAME_GROUP is a hack to allow valid users = @foo to work
+        * correctly in the case where foo also exists as a user. If the flag
+        * is set, don't look for users at all. */
 
-       *psid_name_use = SID_NAME_UNKNOWN;
+       if ((flags & LOOKUP_NAME_GROUP) == 0) {
+               struct samu *sam_account = NULL;
+               DOM_SID user_sid;
 
-       /*
-        * user may be quoted a const string, and map_username and
-        * friends can modify it. Make a modifiable copy. JRA.
-        */
+               if ( !(sam_account = samu_new( NULL )) ) {
+                       return False;
+               }
 
-       fstrcpy(user, c_user);
+               become_root();
+               ret =  pdb_getsampwnam(sam_account, name);
+               unbecome_root();
 
-       sid_copy(&local_sid, get_global_sam_sid());
+               if (ret) {
+                       sid_copy(&user_sid, pdb_get_user_sid(sam_account));
+               }
 
-       if (map_name_to_wellknown_sid(&sid, psid_name_use, user)){
-               fstring sid_str;
-               sid_copy( psid, &sid);
-               sid_to_string(sid_str, &sid);
-               DEBUG(10,("lookup_name: name %s = SID %s, type = %u\n", user, sid_str,
-                       (unsigned int)*psid_name_use ));
-               return True;
-       }
+               TALLOC_FREE(sam_account);
 
-       (void)map_username(user);
+               if (ret) {
+                       if (!sid_check_is_in_our_domain(&user_sid)) {
+                               DEBUG(0, ("User %s with invalid SID %s in passdb\n",
+                                         name, sid_string_dbg(&user_sid)));
+                               return False;
+                       }
 
-       if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_account))) {
-               return False;
-       }
-       
-       /* BEGIN ROOT BLOCK */
-       
-       become_root();
-       if (pdb_getsampwnam(sam_account, user)) {
-               unbecome_root();
-               sid_copy(psid, pdb_get_user_sid(sam_account));
-               *psid_name_use = SID_NAME_USER;
-               
-               pdb_free_sam(&sam_account);
-               return True;
+                       sid_peek_rid(&user_sid, rid);
+                       *type = SID_NAME_USER;
+                       return True;
+               }
        }
 
-       pdb_free_sam(&sam_account);
-
        /*
-        * Maybe it was a group ?
+        * Maybe it is a group ?
         */
 
-       /* check if it's a mapped group */
-       if (pdb_getgrnam(&map, user)) {
-               /* yes it's a mapped group */
-               sid_copy(&local_sid, &map.sid);
-               *psid_name_use = map.sid_name_use;
-       } else {
-               /* it's not a mapped group */
-               grp = getgrnam(user);
-               if(!grp) {
-                       unbecome_root();                /* ---> exit form block */      
-                       return False;
-               }
-               
-               /* 
-                *check if it's mapped, if it is reply it doesn't exist
-                *
-                * that's to prevent this case:
-                *
-                * unix group ug is mapped to nt group ng
-                * someone does a lookup on ug
-                * we must not reply as it doesn't "exist" anymore
-                * for NT. For NT only ng exists.
-                * JFM, 30/11/2001
-                */
-               
-               if (pdb_getgrgid(&map, grp->gr_gid)){
-                       unbecome_root();                /* ---> exit form block */
-                       return False;
-               }
-               
-               sid_append_rid( &local_sid, pdb_gid_to_group_rid(grp->gr_gid));
-               *psid_name_use = SID_NAME_ALIAS;
-       }
+       become_root();
+       ret = pdb_getgrnam(&map, name);
        unbecome_root();
-       /* END ROOT BLOCK */
 
-       sid_copy( psid, &local_sid);
+       if (!ret) {
+               return False;
+       }
 
+       /* BUILTIN groups are looked up elsewhere */
+       if (!sid_check_is_in_our_domain(&map.sid)) {
+               DEBUG(10, ("Found group %s (%s) not in our domain -- "
+                          "ignoring.", name, sid_string_dbg(&map.sid)));
+               return False;
+       }
+
+       /* yes it's a mapped group */
+       sid_peek_rid(&map.sid, rid);
+       *type = map.sid_name_use;
        return True;
 }
 
@@ -942,34 +629,72 @@ BOOL local_lookup_name(const char *c_user, DOM_SID *psid, enum SID_NAME_USE *psi
  Change a password entry in the local smbpasswd file.
  *************************************************************/
 
-BOOL local_password_change(const char *user_name, int local_flags,
-                          const char *new_passwd, 
-                          char *err_str, size_t err_str_len,
-                          char *msg_str, size_t msg_str_len)
+NTSTATUS local_password_change(const char *user_name,
+                               int local_flags,
+                               const char *new_passwd, 
+                               char **pp_err_str,
+                               char **pp_msg_str)
 {
-       SAM_ACCOUNT     *sam_pass=NULL;
-       uint16 other_acb;
+       struct samu *sam_pass=NULL;
+       uint32 other_acb;
+       NTSTATUS result;
 
-       *err_str = '\0';
-       *msg_str = '\0';
+       *pp_err_str = NULL;
+       *pp_msg_str = NULL;
 
        /* Get the smb passwd entry for this user */
-       pdb_init_sam(&sam_pass);
+
+       if ( !(sam_pass = samu_new( NULL )) ) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
        become_root();
        if(!pdb_getsampwnam(sam_pass, user_name)) {
                unbecome_root();
-               pdb_free_sam(&sam_pass);
-               
+               TALLOC_FREE(sam_pass);
+
                if ((local_flags & LOCAL_ADD_USER) || (local_flags & LOCAL_DELETE_USER)) {
-                       /* Might not exist in /etc/passwd.  Use rid algorithm here */
-                       if (!NT_STATUS_IS_OK(pdb_init_sam_new(&sam_pass, user_name, 0))) {
-                               slprintf(err_str, err_str_len-1, "Failed to initialise SAM_ACCOUNT for user %s. Does this user exist in the UNIX password database ?\n", user_name);
-                               return False;
+                       int tmp_debug = DEBUGLEVEL;
+                       struct passwd *pwd;
+
+                       /* Might not exist in /etc/passwd. */
+
+                       if (tmp_debug < 1) {
+                               DEBUGLEVEL = 1;
+                       }
+
+                       if ( !(pwd = getpwnam_alloc(talloc_autofree_context(), user_name)) ) {
+                               return NT_STATUS_NO_SUCH_USER;
+                       }
+
+                       /* create the struct samu and initialize the basic Unix properties */
+
+                       if ( !(sam_pass = samu_new( NULL )) ) {
+                               return NT_STATUS_NO_MEMORY;
+                       }
+
+                       result = samu_set_unix( sam_pass, pwd );
+
+                       DEBUGLEVEL = tmp_debug;
+
+                       TALLOC_FREE( pwd );
+
+                       if (NT_STATUS_EQUAL(result, NT_STATUS_INVALID_PRIMARY_GROUP)) {
+                               return result;
+                       }
+
+                       if (!NT_STATUS_IS_OK(result)) {
+                               if (asprintf(pp_err_str, "Failed to " "initialize account for user %s: %s\n",
+                                               user_name, nt_errstr(result)) < 0) {
+                                       *pp_err_str = NULL;
+                               }
+                               return result;
                        }
                } else {
-                       slprintf(err_str, err_str_len-1,"Failed to find entry for user %s.\n", user_name);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to find entry for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       return NT_STATUS_NO_SUCH_USER;
                }
        } else {
                unbecome_root();
@@ -978,24 +703,30 @@ BOOL local_password_change(const char *user_name, int local_flags,
        }
 
        /* the 'other' acb bits not being changed here */
-       other_acb =  (pdb_get_acct_ctrl(sam_pass) & (!(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
+       other_acb =  (pdb_get_acct_ctrl(sam_pass) & (~(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
        if (local_flags & LOCAL_TRUST_ACCOUNT) {
                if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) {
-                       slprintf(err_str, err_str_len - 1, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
        } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
                if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) {
-                       slprintf(err_str, err_str_len - 1, "Failed to set 'domain trust account' flags for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to set 'domain trust account' flags for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
        } else {
                if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) {
-                       slprintf(err_str, err_str_len - 1, "Failed to set 'normal account' flags for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to set 'normal account' flags for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
        }
 
@@ -1006,23 +737,29 @@ BOOL local_password_change(const char *user_name, int local_flags,
 
        if (local_flags & LOCAL_DISABLE_USER) {
                if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) {
-                       slprintf(err_str, err_str_len-1, "Failed to set 'disabled' flag for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to set 'disabled' flag for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
        } else if (local_flags & LOCAL_ENABLE_USER) {
                if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
-                       slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
        }
-       
+
        if (local_flags & LOCAL_SET_NO_PASSWORD) {
                if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) {
-                       slprintf(err_str, err_str_len-1, "Failed to set 'no password required' flag for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to set 'no password required' flag for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
        } else if (local_flags & LOCAL_SET_PASSWORD) {
                /*
@@ -1036,312 +773,282 @@ BOOL local_password_change(const char *user_name, int local_flags,
                 */
                if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) {
                        if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
-                               slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name);
-                               pdb_free_sam(&sam_pass);
-                               return False;
+                               if (asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name) < 0) {
+                                       *pp_err_str = NULL;
+                               }
+                               TALLOC_FREE(sam_pass);
+                               return NT_STATUS_UNSUCCESSFUL;
                        }
                }
                if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) {
-                       slprintf(err_str, err_str_len-1, "Failed to unset 'no password required' flag for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to unset 'no password required' flag for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
-               
+
                if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) {
-                       slprintf(err_str, err_str_len-1, "Failed to set password for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to set password for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
        }       
 
        if (local_flags & LOCAL_ADD_USER) {
-               if (pdb_add_sam_account(sam_pass)) {
-                       slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return True;
+               if (NT_STATUS_IS_OK(pdb_add_sam_account(sam_pass))) {
+                       if (asprintf(pp_msg_str, "Added user %s.\n", user_name) < 0) {
+                               *pp_msg_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_OK;
                } else {
-                       slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+                       if (asprintf(pp_err_str, "Failed to add entry for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
                }
        } else if (local_flags & LOCAL_DELETE_USER) {
-               if (!pdb_delete_sam_account(sam_pass)) {
-                       slprintf(err_str,err_str_len-1, "Failed to delete entry for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+               if (!NT_STATUS_IS_OK(pdb_delete_sam_account(sam_pass))) {
+                       if (asprintf(pp_err_str, "Failed to delete entry for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return NT_STATUS_UNSUCCESSFUL;
+               }
+               if (asprintf(pp_msg_str, "Deleted user %s.\n", user_name) < 0) {
+                       *pp_msg_str = NULL;
                }
-               slprintf(msg_str, msg_str_len-1, "Deleted user %s.\n", user_name);
        } else {
-               if(!pdb_update_sam_account(sam_pass)) {
-                       slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n", user_name);
-                       pdb_free_sam(&sam_pass);
-                       return False;
+               result = pdb_update_sam_account(sam_pass);
+               if(!NT_STATUS_IS_OK(result)) {
+                       if (asprintf(pp_err_str, "Failed to modify entry for user %s.\n", user_name) < 0) {
+                               *pp_err_str = NULL;
+                       }
+                       TALLOC_FREE(sam_pass);
+                       return result;
+               }
+               if(local_flags & LOCAL_DISABLE_USER) {
+                       if (asprintf(pp_msg_str, "Disabled user %s.\n", user_name) < 0) {
+                               *pp_msg_str = NULL;
+                       }
+               } else if (local_flags & LOCAL_ENABLE_USER) {
+                       if (asprintf(pp_msg_str, "Enabled user %s.\n", user_name) < 0) {
+                               *pp_msg_str = NULL;
+                       }
+               } else if (local_flags & LOCAL_SET_NO_PASSWORD) {
+                       if (asprintf(pp_msg_str, "User %s password set to none.\n", user_name) < 0) {
+                               *pp_msg_str = NULL;
+                       }
                }
-               if(local_flags & LOCAL_DISABLE_USER)
-                       slprintf(msg_str, msg_str_len-1, "Disabled user %s.\n", user_name);
-               else if (local_flags & LOCAL_ENABLE_USER)
-                       slprintf(msg_str, msg_str_len-1, "Enabled user %s.\n", user_name);
-               else if (local_flags & LOCAL_SET_NO_PASSWORD)
-                       slprintf(msg_str, msg_str_len-1, "User %s password set to none.\n", user_name);
        }
 
-       pdb_free_sam(&sam_pass);
-       return True;
+       TALLOC_FREE(sam_pass);
+       return NT_STATUS_OK;
 }
 
-/****************************************************************************
Convert a uid to SID - algorithmic.
-****************************************************************************/
+/**********************************************************************
Marshall/unmarshall struct samu structs.
+ *********************************************************************/
 
-DOM_SID *algorithmic_uid_to_sid(DOM_SID *psid, uid_t uid)
-{
-       if ( !lp_enable_rid_algorithm() )
-               return NULL;
+#define SAMU_BUFFER_FORMAT_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd"
+#define SAMU_BUFFER_FORMAT_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd"
+#define SAMU_BUFFER_FORMAT_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd"
+#define SAMU_BUFFER_FORMAT_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd"
+/* nothing changed between V3 and V4 */
 
-       DEBUG(8,("algorithmic_uid_to_sid: falling back to RID algorithm\n"));
-       sid_copy( psid, get_global_sam_sid() );
-       sid_append_rid( psid, algorithmic_pdb_uid_to_user_rid(uid) );
-       DEBUG(10,("algorithmic_uid_to_sid:  uid (%d) -> SID %s.\n",
-               (unsigned int)uid, sid_string_static(psid) ));
+/*********************************************************************
+*********************************************************************/
 
-       return psid;
-}
+static bool init_samu_from_buffer_v0(struct samu *sampass, uint8 *buf, uint32 buflen)
+{
 
-/****************************************************************************
- Convert a uid to SID - locally.
-****************************************************************************/
+       /* times are stored as 32bit integer
+          take care on system with 64bit wide time_t
+          --SSS */
+       uint32  logon_time,
+               logoff_time,
+               kickoff_time,
+               pass_last_set_time,
+               pass_can_change_time,
+               pass_must_change_time;
+       char *username = NULL;
+       char *domain = NULL;
+       char *nt_username = NULL;
+       char *dir_drive = NULL;
+       char *unknown_str = NULL;
+       char *munged_dial = NULL;
+       char *fullname = NULL;
+       char *homedir = NULL;
+       char *logon_script = NULL;
+       char *profile_path = NULL;
+       char *acct_desc = NULL;
+       char *workstations = NULL;
+       uint32  username_len, domain_len, nt_username_len,
+               dir_drive_len, unknown_str_len, munged_dial_len,
+               fullname_len, homedir_len, logon_script_len,
+               profile_path_len, acct_desc_len, workstations_len;
 
-DOM_SID *local_uid_to_sid(DOM_SID *psid, uid_t uid)
-{
-       SAM_ACCOUNT *sampw = NULL;
-       struct passwd *unix_pw;
-       BOOL ret;
-       
-       unix_pw = sys_getpwuid( uid );
-
-       if ( !unix_pw ) {
-               DEBUG(4,("local_uid_to_sid: host has no idea of uid %lu\n", (unsigned long)uid));
-               return algorithmic_uid_to_sid( psid, uid);
-       }
-       
-       if ( !NT_STATUS_IS_OK(pdb_init_sam(&sampw)) ) {
-               DEBUG(0,("local_uid_to_sid: failed to allocate SAM_ACCOUNT object\n"));
-               return NULL;
-       }
-       
-       become_root();
-       ret = pdb_getsampwnam( sampw, unix_pw->pw_name );
-       unbecome_root();
-       
-       if ( ret )
-               sid_copy( psid, pdb_get_user_sid(sampw) );
-       else {
-               DEBUG(4,("local_uid_to_sid: User %s [uid == %lu] has no samba account\n",
-                       unix_pw->pw_name, (unsigned long)uid));
+       uint32  user_rid, group_rid, remove_me, hours_len, unknown_6;
+       uint16  acct_ctrl, logon_divs;
+       uint16  bad_password_count, logon_count;
+       uint8   *hours = NULL;
+       uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL;
+       uint32          len = 0;
+       uint32          lm_pw_len, nt_pw_len, hourslen;
+       bool ret = True;
 
-               algorithmic_uid_to_sid( psid, uid);
+       if(sampass == NULL || buf == NULL) {
+               DEBUG(0, ("init_samu_from_buffer_v0: NULL parameters found!\n"));
+               return False;
        }
 
-       pdb_free_sam(&sampw);
+/* SAMU_BUFFER_FORMAT_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd" */
 
-       DEBUG(10,("local_uid_to_sid:  uid (%d) -> SID %s (%s).\n", 
-               (unsigned int)uid, sid_string_static(psid), unix_pw->pw_name));
-       
-       return psid;
-}
-
-/****************************************************************************
- Convert a SID to uid - locally.
-****************************************************************************/
+       /* unpack the buffer into variables */
+       len = tdb_unpack (buf, buflen, SAMU_BUFFER_FORMAT_V0,
+               &logon_time,                                            /* d */
+               &logoff_time,                                           /* d */
+               &kickoff_time,                                          /* d */
+               &pass_last_set_time,                                    /* d */
+               &pass_can_change_time,                                  /* d */
+               &pass_must_change_time,                                 /* d */
+               &username_len, &username,                               /* B */
+               &domain_len, &domain,                                   /* B */
+               &nt_username_len, &nt_username,                         /* B */
+               &fullname_len, &fullname,                               /* B */
+               &homedir_len, &homedir,                                 /* B */
+               &dir_drive_len, &dir_drive,                             /* B */
+               &logon_script_len, &logon_script,                       /* B */
+               &profile_path_len, &profile_path,                       /* B */
+               &acct_desc_len, &acct_desc,                             /* B */
+               &workstations_len, &workstations,                       /* B */
+               &unknown_str_len, &unknown_str,                         /* B */
+               &munged_dial_len, &munged_dial,                         /* B */
+               &user_rid,                                              /* d */
+               &group_rid,                                             /* d */
+               &lm_pw_len, &lm_pw_ptr,                                 /* B */
+               &nt_pw_len, &nt_pw_ptr,                                 /* B */
+               &acct_ctrl,                                             /* w */
+               &remove_me, /* remove on the next TDB_FORMAT upgarde */ /* d */
+               &logon_divs,                                            /* w */
+               &hours_len,                                             /* d */
+               &hourslen, &hours,                                      /* B */
+               &bad_password_count,                                    /* w */
+               &logon_count,                                           /* w */
+               &unknown_6);                                            /* d */
 
-BOOL local_sid_to_uid(uid_t *puid, const DOM_SID *psid, enum SID_NAME_USE *name_type)
-{
-       SAM_ACCOUNT *sampw = NULL;      
-       struct passwd *unix_pw;
-       const char *user_name;
+       if (len == (uint32) -1)  {
+               ret = False;
+               goto done;
+       }
 
-       *name_type = SID_NAME_UNKNOWN;
+       pdb_set_logon_time(sampass, logon_time, PDB_SET);
+       pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
+       pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
+       pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
+       pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
+       pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
 
-       /*
-        * We can only convert to a uid if this is our local
-        * Domain SID (ie. we are the controling authority).
-        */
-       if (!sid_check_is_in_our_domain(psid) ) {
-               DEBUG(5,("local_sid_to_uid: this SID (%s) is not from our domain\n", sid_string_static(psid)));
-               return False;
-       }
+       pdb_set_username(sampass, username, PDB_SET); 
+       pdb_set_domain(sampass, domain, PDB_SET);
+       pdb_set_nt_username(sampass, nt_username, PDB_SET);
+       pdb_set_fullname(sampass, fullname, PDB_SET);
 
-       /* lookup the user account */
-       
-       if ( !NT_STATUS_IS_OK(pdb_init_sam(&sampw)) ) {
-               DEBUG(0,("local_sid_to_uid: Failed to allocate memory for SAM_ACCOUNT object\n"));
-               return False;
+       if (homedir) {
+               pdb_set_homedir(sampass, homedir, PDB_SET);
        }
-               
-       become_root();
-       if ( !pdb_getsampwsid(sampw, psid) ) {
-               unbecome_root();
-               pdb_free_sam(&sampw);
-               DEBUG(8,("local_sid_to_uid: Could not find SID %s in passdb\n",
-                       sid_string_static(psid)));
-               return False;
+       else {
+               pdb_set_homedir(sampass, 
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_home()),
+                       PDB_DEFAULT);
        }
-       unbecome_root();
-       
-       user_name = pdb_get_username(sampw);
-
-       unix_pw = sys_getpwnam( user_name );
 
-       if ( !unix_pw ) {
-               DEBUG(0,("local_sid_to_uid: %s found in passdb but getpwnam() return NULL!\n",
-                       user_name));
-               pdb_free_sam( &sampw );
-               return False;
+       if (dir_drive)  
+               pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
+       else {
+               pdb_set_dir_drive(sampass, 
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_drive()),
+                       PDB_DEFAULT);
        }
-               
-       *puid = unix_pw->pw_uid;
-       
-       DEBUG(10,("local_sid_to_uid: SID %s -> uid (%u) (%s).\n", sid_string_static(psid),
-               (unsigned int)*puid, user_name ));
-
-       *name_type = SID_NAME_USER;
-       pdb_free_sam( &sampw );
-       return True;
-}
 
-/****************************************************************************
- Convert a gid to SID - locally.
-****************************************************************************/
-
-DOM_SID *local_gid_to_sid(DOM_SID *psid, gid_t gid)
-{
-       GROUP_MAP group;
-       BOOL ret;
-       
-       /* we don't need to disable winbindd since the gid is stored in 
-          the GROUP_MAP object */
-          
-       /* done as root since ldap backend requires root to open a connection */
-
-       become_root();
-       ret = pdb_getgrgid( &group, gid );
-       unbecome_root();
-       
-       if ( !ret ) {
+       if (logon_script) 
+               pdb_set_logon_script(sampass, logon_script, PDB_SET);
+       else {
+               pdb_set_logon_script(sampass, 
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_script()),
+                       PDB_DEFAULT);
+       }
 
-               /* fallback to rid mapping if enabled */
+       if (profile_path) {     
+               pdb_set_profile_path(sampass, profile_path, PDB_SET);
+       } else {
+               pdb_set_profile_path(sampass, 
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_path()),
+                       PDB_DEFAULT);
+       }
 
-               if ( lp_enable_rid_algorithm() ) {
-                       sid_copy(psid, get_global_sam_sid());
-                       sid_append_rid(psid, pdb_gid_to_group_rid(gid));
+       pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
+       pdb_set_workstations(sampass, workstations, PDB_SET);
+       pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
 
-                       DEBUG(10,("local_gid_to_sid: Fall back to algorithmic mapping: %u -> %s\n", 
-                               (unsigned int)gid, sid_string_static(psid)));
-                               
-                       return psid;
+       if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
+               if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
+                       ret = False;
+                       goto done;
                }
-               else
-                       return NULL;
-       }
-       
-       sid_copy( psid, &group.sid );
-       
-       DEBUG(10,("local_gid_to_sid:  gid (%d) -> SID %s.\n", 
-               (unsigned int)gid, sid_string_static(psid)));   
-       
-       return psid;
-}
-
-/****************************************************************************
- Convert a SID to gid - locally.
-****************************************************************************/
-
-BOOL local_sid_to_gid(gid_t *pgid, const DOM_SID *psid, enum SID_NAME_USE *name_type)
-{
-       uint32 rid;
-       GROUP_MAP group;
-       BOOL ret;
-
-       *name_type = SID_NAME_UNKNOWN;
-
-       /* This call can enumerate group mappings for foreign sids as well.
-          So don't check for a match against our domain SID */
-
-       /* we don't need to disable winbindd since the gid is stored in 
-          the GROUP_MAP object */
-          
-       become_root();
-       ret = pdb_getgrsid(&group, *psid);
-       unbecome_root();
-       
-       if ( !ret ) {
-
-               /* Fallback to algorithmic rid mapping if enabled */
-
-               if ( lp_enable_rid_algorithm() ) {
-
-                       if (!sid_check_is_in_our_domain(psid) ) {
-                               DEBUG(5,("local_sid_to_gid: RID algorithm only supported for our domain (%s is not)\n", sid_string_static(psid)));
-                               return False;
-                       }
-
-                       if (!sid_peek_rid(psid, &rid)) {
-                               DEBUG(10,("local_sid_to_gid: invalid SID!\n"));
-                                       return False;
-                       }
-
-                       DEBUG(10,("local_sid_to_gid: Fall back to algorithmic mapping\n"));
+       }
 
-                       if (algorithmic_pdb_rid_is_user(rid)) {
-                               DEBUG(3, ("local_sid_to_gid: SID %s is *NOT* a group\n", sid_string_static(psid)));
-                               return False;
-                       } else {
-                               *pgid = pdb_group_rid_to_gid(rid);
-                               DEBUG(10,("local_sid_to_gid: mapping: %s -> %u\n", sid_string_static(psid), (unsigned int)(*pgid)));
-                               return True;
-                       }
+       if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
+               if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
+                       ret = False;
+                       goto done;
                }
-               
-               return False;
        }
 
-       *pgid = group.gid;
-       *name_type = group.sid_name_use;
-
-       DEBUG(10,("local_sid_to_gid: SID %s -> gid (%u)\n", sid_string_static(psid),
-               (unsigned int)*pgid));
-
-       return True;
-}
-
-/**********************************************************************
- Marshall/unmarshall SAM_ACCOUNT structs.
- *********************************************************************/
-
-#define TDB_FORMAT_STRING_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd"
-#define TDB_FORMAT_STRING_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd"
-#define TDB_FORMAT_STRING_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd"
-
-/**********************************************************************
- Intialize a SAM_ACCOUNT struct from a BYTE buffer of size len
- *********************************************************************/
+       pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
+       pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
+       pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
+       pdb_set_hours_len(sampass, hours_len, PDB_SET);
+       pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
+       pdb_set_logon_count(sampass, logon_count, PDB_SET);
+       pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
+       pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
+       pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
+       pdb_set_hours(sampass, hours, PDB_SET);
 
-BOOL init_sam_from_buffer(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
-{
-       return(init_sam_from_buffer_v2(sampass, buf, buflen));
-}
+done:
 
-/**********************************************************************
- Intialize a BYTE buffer from a SAM_ACCOUNT struct
- *********************************************************************/
+       SAFE_FREE(username);
+       SAFE_FREE(domain);
+       SAFE_FREE(nt_username);
+       SAFE_FREE(fullname);
+       SAFE_FREE(homedir);
+       SAFE_FREE(dir_drive);
+       SAFE_FREE(logon_script);
+       SAFE_FREE(profile_path);
+       SAFE_FREE(acct_desc);
+       SAFE_FREE(workstations);
+       SAFE_FREE(munged_dial);
+       SAFE_FREE(unknown_str);
+       SAFE_FREE(lm_pw_ptr);
+       SAFE_FREE(nt_pw_ptr);
+       SAFE_FREE(hours);
 
-uint32 init_buffer_from_sam (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL size_only)
-{
-       return(init_buffer_from_sam_v2(buf, sampass, size_only));
+       return ret;
 }
 
+/*********************************************************************
+*********************************************************************/
 
-BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
+static bool init_samu_from_buffer_v1(struct samu *sampass, uint8 *buf, uint32 buflen)
 {
 
        /* times are stored as 32bit integer
@@ -1350,6 +1057,7 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        uint32  logon_time,
                logoff_time,
                kickoff_time,
+               bad_password_time,
                pass_last_set_time,
                pass_can_change_time,
                pass_must_change_time;
@@ -1369,7 +1077,7 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                dir_drive_len, unknown_str_len, munged_dial_len,
                fullname_len, homedir_len, logon_script_len,
                profile_path_len, acct_desc_len, workstations_len;
-               
+
        uint32  user_rid, group_rid, remove_me, hours_len, unknown_6;
        uint16  acct_ctrl, logon_divs;
        uint16  bad_password_count, logon_count;
@@ -1377,20 +1085,22 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL;
        uint32          len = 0;
        uint32          lm_pw_len, nt_pw_len, hourslen;
-       BOOL ret = True;
-       
+       bool ret = True;
+
        if(sampass == NULL || buf == NULL) {
-               DEBUG(0, ("init_sam_from_buffer_v0: NULL parameters found!\n"));
+               DEBUG(0, ("init_samu_from_buffer_v1: NULL parameters found!\n"));
                return False;
        }
 
-/* TDB_FORMAT_STRING_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd" */
+/* SAMU_BUFFER_FORMAT_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd" */
 
        /* unpack the buffer into variables */
-       len = tdb_unpack ((char *)buf, buflen, TDB_FORMAT_STRING_V0,
+       len = tdb_unpack (buf, buflen, SAMU_BUFFER_FORMAT_V1,
                &logon_time,                                            /* d */
                &logoff_time,                                           /* d */
                &kickoff_time,                                          /* d */
+               /* Change from V0 is addition of bad_password_time field. */
+               &bad_password_time,                                     /* d */
                &pass_last_set_time,                                    /* d */
                &pass_can_change_time,                                  /* d */
                &pass_must_change_time,                                 /* d */
@@ -1411,14 +1121,14 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                &lm_pw_len, &lm_pw_ptr,                                 /* B */
                &nt_pw_len, &nt_pw_ptr,                                 /* B */
                &acct_ctrl,                                             /* w */
-               &remove_me, /* remove on the next TDB_FORMAT upgarde */ /* d */
+               &remove_me,                                             /* d */
                &logon_divs,                                            /* w */
                &hours_len,                                             /* d */
                &hourslen, &hours,                                      /* B */
                &bad_password_count,                                    /* w */
                &logon_count,                                           /* w */
                &unknown_6);                                            /* d */
-               
+
        if (len == (uint32) -1)  {
                ret = False;
                goto done;
@@ -1427,6 +1137,9 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        pdb_set_logon_time(sampass, logon_time, PDB_SET);
        pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
        pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
+
+       /* Change from V0 is addition of bad_password_time field. */
+       pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
        pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
        pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
        pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
@@ -1441,7 +1154,8 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        }
        else {
                pdb_set_homedir(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_home()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_home()),
                        PDB_DEFAULT);
        }
 
@@ -1449,7 +1163,8 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
        else {
                pdb_set_dir_drive(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx,  username, lp_logon_drive()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_drive()),
                        PDB_DEFAULT);
        }
 
@@ -1457,15 +1172,17 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                pdb_set_logon_script(sampass, logon_script, PDB_SET);
        else {
                pdb_set_logon_script(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_script()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_script()),
                        PDB_DEFAULT);
        }
-       
+
        if (profile_path) {     
                pdb_set_profile_path(sampass, profile_path, PDB_SET);
        } else {
                pdb_set_profile_path(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_path()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_path()),
                        PDB_DEFAULT);
        }
 
@@ -1488,6 +1205,7 @@ BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        }
 
        pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
+
        pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
        pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
        pdb_set_hours_len(sampass, hours_len, PDB_SET);
@@ -1519,7 +1237,7 @@ done:
        return ret;
 }
 
-BOOL init_sam_from_buffer_v1(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
+static bool init_samu_from_buffer_v2(struct samu *sampass, uint8 *buf, uint32 buflen)
 {
 
        /* times are stored as 32bit integer
@@ -1548,29 +1266,31 @@ BOOL init_sam_from_buffer_v1(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                dir_drive_len, unknown_str_len, munged_dial_len,
                fullname_len, homedir_len, logon_script_len,
                profile_path_len, acct_desc_len, workstations_len;
-               
-       uint32  user_rid, group_rid, remove_me, hours_len, unknown_6;
+
+       uint32  user_rid, group_rid, hours_len, unknown_6;
        uint16  acct_ctrl, logon_divs;
        uint16  bad_password_count, logon_count;
        uint8   *hours = NULL;
-       uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL;
+       uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
        uint32          len = 0;
-       uint32          lm_pw_len, nt_pw_len, hourslen;
-       BOOL ret = True;
-       
+       uint32          lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
+       uint32 pwHistLen = 0;
+       bool ret = True;
+       fstring tmp_string;
+       bool expand_explicit = lp_passdb_expand_explicit();
+
        if(sampass == NULL || buf == NULL) {
-               DEBUG(0, ("init_sam_from_buffer_v1: NULL parameters found!\n"));
+               DEBUG(0, ("init_samu_from_buffer_v2: NULL parameters found!\n"));
                return False;
        }
 
-/* TDB_FORMAT_STRING_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd" */
+/* SAMU_BUFFER_FORMAT_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd" */
 
        /* unpack the buffer into variables */
-       len = tdb_unpack ((char *)buf, buflen, TDB_FORMAT_STRING_V1,
+       len = tdb_unpack (buf, buflen, SAMU_BUFFER_FORMAT_V2,
                &logon_time,                                            /* d */
                &logoff_time,                                           /* d */
                &kickoff_time,                                          /* d */
-               /* Change from V0 is addition of bad_password_time field. */
                &bad_password_time,                                     /* d */
                &pass_last_set_time,                                    /* d */
                &pass_can_change_time,                                  /* d */
@@ -1591,15 +1311,17 @@ BOOL init_sam_from_buffer_v1(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                &group_rid,                                             /* d */
                &lm_pw_len, &lm_pw_ptr,                                 /* B */
                &nt_pw_len, &nt_pw_ptr,                                 /* B */
+               /* Change from V1 is addition of password history field. */
+               &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
                &acct_ctrl,                                             /* w */
-               &remove_me,                                             /* d */
+               /* Also "remove_me" field was removed. */
                &logon_divs,                                            /* w */
                &hours_len,                                             /* d */
                &hourslen, &hours,                                      /* B */
                &bad_password_count,                                    /* w */
                &logon_count,                                           /* w */
                &unknown_6);                                            /* d */
-               
+
        if (len == (uint32) -1)  {
                ret = False;
                goto done;
@@ -1608,8 +1330,6 @@ BOOL init_sam_from_buffer_v1(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        pdb_set_logon_time(sampass, logon_time, PDB_SET);
        pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
        pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
-
-       /* Change from V0 is addition of bad_password_time field. */
        pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
        pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
        pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
@@ -1621,35 +1341,52 @@ BOOL init_sam_from_buffer_v1(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        pdb_set_fullname(sampass, fullname, PDB_SET);
 
        if (homedir) {
-               pdb_set_homedir(sampass, homedir, PDB_SET);
+               fstrcpy( tmp_string, homedir );
+               if (expand_explicit) {
+                       standard_sub_basic( username, domain, tmp_string,
+                                           sizeof(tmp_string) );
+               }
+               pdb_set_homedir(sampass, tmp_string, PDB_SET);
        }
        else {
                pdb_set_homedir(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_home()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_home()),
                        PDB_DEFAULT);
        }
 
        if (dir_drive)  
                pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
-       else {
-               pdb_set_dir_drive(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx,  username, lp_logon_drive()),
-                       PDB_DEFAULT);
-       }
+       else
+               pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
 
-       if (logon_script) 
-               pdb_set_logon_script(sampass, logon_script, PDB_SET);
+       if (logon_script) {
+               fstrcpy( tmp_string, logon_script );
+               if (expand_explicit) {
+                       standard_sub_basic( username, domain, tmp_string,
+                                           sizeof(tmp_string) );
+               }
+               pdb_set_logon_script(sampass, tmp_string, PDB_SET);
+       }
        else {
                pdb_set_logon_script(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_script()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_script()),
                        PDB_DEFAULT);
        }
-       
+
        if (profile_path) {     
-               pdb_set_profile_path(sampass, profile_path, PDB_SET);
-       } else {
+               fstrcpy( tmp_string, profile_path );
+               if (expand_explicit) {
+                       standard_sub_basic( username, domain, tmp_string,
+                                           sizeof(tmp_string) );
+               }
+               pdb_set_profile_path(sampass, tmp_string, PDB_SET);
+       } 
+       else {
                pdb_set_profile_path(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_path()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_path()),
                        PDB_DEFAULT);
        }
 
@@ -1671,7 +1408,34 @@ BOOL init_sam_from_buffer_v1(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                }
        }
 
-       pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
+       /* Change from V1 is addition of password history field. */
+       pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
+       if (pwHistLen) {
+               uint8 *pw_hist = SMB_MALLOC_ARRAY(uint8, pwHistLen * PW_HISTORY_ENTRY_LEN);
+               if (!pw_hist) {
+                       ret = False;
+                       goto done;
+               }
+               memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
+               if (nt_pw_hist_ptr && nt_pw_hist_len) {
+                       int i;
+                       SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0);
+                       nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN;
+                       for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) {
+                               memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN],
+                                       &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN],
+                                       PW_HISTORY_ENTRY_LEN);
+                       }
+               }
+               if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) {
+                       SAFE_FREE(pw_hist);
+                       ret = False;
+                       goto done;
+               }
+               SAFE_FREE(pw_hist);
+       } else {
+               pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
+       }
 
        pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
        pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
@@ -1699,13 +1463,16 @@ done:
        SAFE_FREE(unknown_str);
        SAFE_FREE(lm_pw_ptr);
        SAFE_FREE(nt_pw_ptr);
+       SAFE_FREE(nt_pw_hist_ptr);
        SAFE_FREE(hours);
 
        return ret;
 }
 
+/*********************************************************************
+*********************************************************************/
 
-BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
+static bool init_samu_from_buffer_v3(struct samu *sampass, uint8 *buf, uint32 buflen)
 {
 
        /* times are stored as 32bit integer
@@ -1734,29 +1501,28 @@ BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                dir_drive_len, unknown_str_len, munged_dial_len,
                fullname_len, homedir_len, logon_script_len,
                profile_path_len, acct_desc_len, workstations_len;
-               
-       uint32  user_rid, group_rid, hours_len, unknown_6;
-       uint16  acct_ctrl, logon_divs;
+
+       uint32  user_rid, group_rid, hours_len, unknown_6, acct_ctrl;
+       uint16  logon_divs;
        uint16  bad_password_count, logon_count;
        uint8   *hours = NULL;
        uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
        uint32          len = 0;
        uint32          lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
        uint32 pwHistLen = 0;
-       BOOL ret = True;
-       fstring tmpstring;
-       BOOL expand_explicit = lp_parm_bool(-1, "passdb", "expand_explicit",
-                                           False);
-       
+       bool ret = True;
+       fstring tmp_string;
+       bool expand_explicit = lp_passdb_expand_explicit();
+
        if(sampass == NULL || buf == NULL) {
-               DEBUG(0, ("init_sam_from_buffer_v2: NULL parameters found!\n"));
+               DEBUG(0, ("init_samu_from_buffer_v3: NULL parameters found!\n"));
                return False;
        }
-                                                                       
-/* TDB_FORMAT_STRING_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd" */
+
+/* SAMU_BUFFER_FORMAT_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
 
        /* unpack the buffer into variables */
-       len = tdb_unpack ((char *)buf, buflen, TDB_FORMAT_STRING_V2,
+       len = tdb_unpack (buf, buflen, SAMU_BUFFER_FORMAT_V3,
                &logon_time,                                            /* d */
                &logoff_time,                                           /* d */
                &kickoff_time,                                          /* d */
@@ -1782,7 +1548,8 @@ BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                &nt_pw_len, &nt_pw_ptr,                                 /* B */
                /* Change from V1 is addition of password history field. */
                &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
-               &acct_ctrl,                                             /* w */
+               /* Change from V2 is the uint32 acb_mask */
+               &acct_ctrl,                                             /* d */
                /* Also "remove_me" field was removed. */
                &logon_divs,                                            /* w */
                &hours_len,                                             /* d */
@@ -1790,19 +1557,19 @@ BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                &bad_password_count,                                    /* w */
                &logon_count,                                           /* w */
                &unknown_6);                                            /* d */
-               
+
        if (len == (uint32) -1)  {
                ret = False;
                goto done;
        }
 
-       pdb_set_logon_time(sampass, logon_time, PDB_SET);
-       pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
-       pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
-       pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
-       pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
-       pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
-       pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
+       pdb_set_logon_time(sampass, convert_uint32_to_time_t(logon_time), PDB_SET);
+       pdb_set_logoff_time(sampass, convert_uint32_to_time_t(logoff_time), PDB_SET);
+       pdb_set_kickoff_time(sampass, convert_uint32_to_time_t(kickoff_time), PDB_SET);
+       pdb_set_bad_password_time(sampass, convert_uint32_to_time_t(bad_password_time), PDB_SET);
+       pdb_set_pass_can_change_time(sampass, convert_uint32_to_time_t(pass_can_change_time), PDB_SET);
+       pdb_set_pass_must_change_time(sampass, convert_uint32_to_time_t(pass_must_change_time), PDB_SET);
+       pdb_set_pass_last_set_time(sampass, convert_uint32_to_time_t(pass_last_set_time), PDB_SET);
 
        pdb_set_username(sampass, username, PDB_SET); 
        pdb_set_domain(sampass, domain, PDB_SET);
@@ -1810,16 +1577,17 @@ BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        pdb_set_fullname(sampass, fullname, PDB_SET);
 
        if (homedir) {
-               fstrcpy( tmpstring, homedir );
+               fstrcpy( tmp_string, homedir );
                if (expand_explicit) {
-                       standard_sub_basic( username, tmpstring,
-                                           sizeof(tmpstring) );
+                       standard_sub_basic( username, domain, tmp_string,
+                                           sizeof(tmp_string) );
                }
-               pdb_set_homedir(sampass, tmpstring, PDB_SET);
+               pdb_set_homedir(sampass, tmp_string, PDB_SET);
        }
        else {
                pdb_set_homedir(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_home()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_home()),
                        PDB_DEFAULT);
        }
 
@@ -1829,30 +1597,31 @@ BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
 
        if (logon_script) {
-               fstrcpy( tmpstring, logon_script );
+               fstrcpy( tmp_string, logon_script );
                if (expand_explicit) {
-                       standard_sub_basic( username, tmpstring,
-                                           sizeof(tmpstring) );
+                       standard_sub_basic( username, domain, tmp_string,
+                                           sizeof(tmp_string) );
                }
-               pdb_set_logon_script(sampass, tmpstring, PDB_SET);
+               pdb_set_logon_script(sampass, tmp_string, PDB_SET);
        }
        else {
                pdb_set_logon_script(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_script()),
+                       talloc_sub_basic(sampass, username, domain,
+                                        lp_logon_script()),
                        PDB_DEFAULT);
        }
-       
+
        if (profile_path) {     
-               fstrcpy( tmpstring, profile_path );
+               fstrcpy( tmp_string, profile_path );
                if (expand_explicit) {
-                       standard_sub_basic( username, tmpstring,
-                                           sizeof(tmpstring) );
+                       standard_sub_basic( username, domain, tmp_string,
+                                           sizeof(tmp_string) );
                }
-               pdb_set_profile_path(sampass, tmpstring, PDB_SET);
+               pdb_set_profile_path(sampass, tmp_string, PDB_SET);
        } 
        else {
                pdb_set_profile_path(sampass, 
-                       talloc_sub_basic(sampass->mem_ctx, username, lp_logon_path()),
+                       talloc_sub_basic(sampass, username, domain, lp_logon_path()),
                        PDB_DEFAULT);
        }
 
@@ -1874,10 +1643,9 @@ BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
                }
        }
 
-       /* Change from V1 is addition of password history field. */
        pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
        if (pwHistLen) {
-               uint8 *pw_hist = SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN);
+               uint8 *pw_hist = (uint8 *)SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN);
                if (!pw_hist) {
                        ret = False;
                        goto done;
@@ -1904,11 +1672,11 @@ BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
        }
 
        pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
-       pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
        pdb_set_hours_len(sampass, hours_len, PDB_SET);
        pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
        pdb_set_logon_count(sampass, logon_count, PDB_SET);
        pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
+       /* Change from V2 is the uint32 acct_ctrl */
        pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
        pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
        pdb_set_hours(sampass, hours, PDB_SET);
@@ -1935,7 +1703,10 @@ done:
        return ret;
 }
 
-uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL size_only)
+/*********************************************************************
+*********************************************************************/
+
+static uint32 init_buffer_from_samu_v3 (uint8 **buf, struct samu *sampass, bool size_only)
 {
        size_t len, buflen;
 
@@ -1977,22 +1748,16 @@ uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL si
        uint32  nt_pw_hist_len;
        uint32 pwHistLen = 0;
 
-       /* do we have a valid SAM_ACCOUNT pointer? */
-       if (sampass == NULL) {
-               DEBUG(0, ("init_buffer_from_sam: SAM_ACCOUNT is NULL!\n"));
-               return -1;
-       }
-       
        *buf = NULL;
        buflen = 0;
 
-       logon_time = (uint32)pdb_get_logon_time(sampass);
-       logoff_time = (uint32)pdb_get_logoff_time(sampass);
-       kickoff_time = (uint32)pdb_get_kickoff_time(sampass);
-       bad_password_time = (uint32)pdb_get_bad_password_time(sampass);
-       pass_can_change_time = (uint32)pdb_get_pass_can_change_time(sampass);
-       pass_must_change_time = (uint32)pdb_get_pass_must_change_time(sampass);
-       pass_last_set_time = (uint32)pdb_get_pass_last_set_time(sampass);
+       logon_time = convert_time_t_to_uint32(pdb_get_logon_time(sampass));
+       logoff_time = convert_time_t_to_uint32(pdb_get_logoff_time(sampass));
+       kickoff_time = convert_time_t_to_uint32(pdb_get_kickoff_time(sampass));
+       bad_password_time = convert_time_t_to_uint32(pdb_get_bad_password_time(sampass));
+       pass_can_change_time = convert_time_t_to_uint32(pdb_get_pass_can_change_time_noncalc(sampass));
+       pass_must_change_time = convert_time_t_to_uint32(pdb_get_pass_must_change_time(sampass));
+       pass_last_set_time = convert_time_t_to_uint32(pdb_get_pass_last_set_time(sampass));
 
        user_rid = pdb_get_user_rid(sampass);
        group_rid = pdb_get_group_rid(sampass);
@@ -2072,12 +1837,12 @@ uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL si
        } else {
                profile_path_len = 0;
        }
-       
+
        lm_pw = pdb_get_lanman_passwd(sampass);
        if (!lm_pw) {
                lm_pw_len = 0;
        }
-       
+
        nt_pw = pdb_get_nt_passwd(sampass);
        if (!nt_pw) {
                nt_pw_len = 0;
@@ -2115,10 +1880,10 @@ uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL si
                munged_dial_len = 0;    
        }
 
-/* TDB_FORMAT_STRING_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd" */
+/* SAMU_BUFFER_FORMAT_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
 
        /* one time to get the size needed */
-       len = tdb_pack(NULL, 0,  TDB_FORMAT_STRING_V2,
+       len = tdb_pack(NULL, 0,  SAMU_BUFFER_FORMAT_V3,
                logon_time,                             /* d */
                logoff_time,                            /* d */
                kickoff_time,                           /* d */
@@ -2143,7 +1908,7 @@ uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL si
                lm_pw_len, lm_pw,                       /* B */
                nt_pw_len, nt_pw,                       /* B */
                nt_pw_hist_len, nt_pw_hist,             /* B */
-               pdb_get_acct_ctrl(sampass),             /* w */
+               pdb_get_acct_ctrl(sampass),             /* d */
                pdb_get_logon_divs(sampass),            /* w */
                pdb_get_hours_len(sampass),             /* d */
                MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
@@ -2157,12 +1922,12 @@ uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL si
 
        /* malloc the space needed */
        if ( (*buf=(uint8*)SMB_MALLOC(len)) == NULL) {
-               DEBUG(0,("init_buffer_from_sam_v2: Unable to malloc() memory for buffer!\n"));
+               DEBUG(0,("init_buffer_from_samu_v3: Unable to malloc() memory for buffer!\n"));
                return (-1);
        }
-       
+
        /* now for the real call to tdb_pack() */
-       buflen = tdb_pack((char *)*buf, len,  TDB_FORMAT_STRING_V2,
+       buflen = tdb_pack(*buf, len,  SAMU_BUFFER_FORMAT_V3,
                logon_time,                             /* d */
                logoff_time,                            /* d */
                kickoff_time,                           /* d */
@@ -2187,17 +1952,17 @@ uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL si
                lm_pw_len, lm_pw,                       /* B */
                nt_pw_len, nt_pw,                       /* B */
                nt_pw_hist_len, nt_pw_hist,             /* B */
-               pdb_get_acct_ctrl(sampass),             /* w */
+               pdb_get_acct_ctrl(sampass),             /* d */
                pdb_get_logon_divs(sampass),            /* w */
                pdb_get_hours_len(sampass),             /* d */
                MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
                pdb_get_bad_password_count(sampass),    /* w */
                pdb_get_logon_count(sampass),           /* w */
                pdb_get_unknown_6(sampass));            /* d */
-       
+
        /* check to make sure we got it correct */
        if (buflen != len) {
-               DEBUG(0, ("init_buffer_from_sam_v2: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n", 
+               DEBUG(0, ("init_buffer_from_samu_v3: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n", 
                          (unsigned long)buflen, (unsigned long)len));  
                /* error */
                SAFE_FREE (*buf);
@@ -2207,70 +1972,80 @@ uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL si
        return (buflen);
 }
 
-BOOL pdb_copy_sam_account(const SAM_ACCOUNT *src, SAM_ACCOUNT **dst)
+static bool init_samu_from_buffer_v4(struct samu *sampass, uint8 *buf, uint32 buflen)
 {
-       BOOL result;
-       uint8 *buf;
-       int len;
-
-       if ((*dst == NULL) && (!NT_STATUS_IS_OK(pdb_init_sam(dst))))
-               return False;
-
-       len = init_buffer_from_sam_v2(&buf, src, False);
-
-       if (len == -1)
-               return False;
+       /* nothing changed between V3 and V4 */
+       return init_samu_from_buffer_v3(sampass, buf, buflen);
+}
 
-       result = init_sam_from_buffer_v2(*dst, buf, len);
-       (*dst)->methods = src->methods;
+static uint32 init_buffer_from_samu_v4(uint8 **buf, struct samu *sampass, bool size_only)
+{
+       /* nothing changed between V3 and V4 */
+       return init_buffer_from_samu_v3(buf, sampass, size_only);
+}
 
-       free(buf);
+/**********************************************************************
+ Intialize a struct samu struct from a BYTE buffer of size len
+ *********************************************************************/
 
-       return result;
+bool init_samu_from_buffer(struct samu *sampass, uint32_t level,
+                          uint8 *buf, uint32 buflen)
+{
+       switch (level) {
+       case SAMU_BUFFER_V0:
+               return init_samu_from_buffer_v0(sampass, buf, buflen);
+       case SAMU_BUFFER_V1:
+               return init_samu_from_buffer_v1(sampass, buf, buflen);
+       case SAMU_BUFFER_V2:
+               return init_samu_from_buffer_v2(sampass, buf, buflen);
+       case SAMU_BUFFER_V3:
+               return init_samu_from_buffer_v3(sampass, buf, buflen);
+       case SAMU_BUFFER_V4:
+               return init_samu_from_buffer_v4(sampass, buf, buflen);
+       }
+
+       return false;
 }
 
 /**********************************************************************
-**********************************************************************/
+ Intialize a BYTE buffer from a struct samu struct
+ *********************************************************************/
 
-static BOOL get_free_ugid_range(uint32 *low, uint32 *high)
+uint32 init_buffer_from_samu (uint8 **buf, struct samu *sampass, bool size_only)
 {
-       uid_t u_low, u_high;
-       gid_t g_low, g_high;
-
-       if (!lp_idmap_uid(&u_low, &u_high) || !lp_idmap_gid(&g_low, &g_high)) {
-               return False;
-       }
-       
-       *low  = (u_low < g_low)   ? u_low  : g_low;
-       *high = (u_high < g_high) ? u_high : g_high;
-       
-       return True;
+       return init_buffer_from_samu_v4(buf, sampass, size_only);
 }
 
-/******************************************************************
- Get the the non-algorithmic RID range if idmap range are defined
-******************************************************************/
+/*********************************************************************
+*********************************************************************/
 
-BOOL get_free_rid_range(uint32 *low, uint32 *high)
+bool pdb_copy_sam_account(struct samu *dst, struct samu *src )
 {
-       uint32 id_low, id_high;
+       uint8 *buf = NULL;
+       int len;
 
-       if (!lp_enable_rid_algorithm()) {
-               *low = BASE_RID;
-               *high = (uint32)-1;
+       len = init_buffer_from_samu(&buf, src, False);
+       if (len == -1 || !buf) {
+               SAFE_FREE(buf);
+               return False;
        }
 
-       if (!get_free_ugid_range(&id_low, &id_high)) {
+       if (!init_samu_from_buffer( dst, SAMU_BUFFER_LATEST, buf, len )) {
+               free(buf);
                return False;
        }
 
-       *low = algorithmic_pdb_uid_to_user_rid(id_low);
-       if (algorithmic_pdb_user_rid_to_uid((uint32)-1) < id_high) {
-               *high = (uint32)-1;
-       } else {
-               *high = algorithmic_pdb_uid_to_user_rid(id_high);
+       dst->methods = src->methods;
+
+       if ( src->unix_pw ) {
+               dst->unix_pw = tcopy_passwd( dst, src->unix_pw );
+               if (!dst->unix_pw) {
+                       free(buf);
+                       return False;
+               }
        }
 
+       free(buf);
        return True;
 }
 
@@ -2278,21 +2053,24 @@ BOOL get_free_rid_range(uint32 *low, uint32 *high)
  Update the bad password count checking the AP_RESET_COUNT_TIME 
 *********************************************************************/
 
-BOOL pdb_update_bad_password_count(SAM_ACCOUNT *sampass, BOOL *updated)
+bool pdb_update_bad_password_count(struct samu *sampass, bool *updated)
 {
        time_t LastBadPassword;
        uint16 BadPasswordCount;
        uint32 resettime; 
+       bool res;
 
-       if (!sampass) return False;
-       
        BadPasswordCount = pdb_get_bad_password_count(sampass);
        if (!BadPasswordCount) {
                DEBUG(9, ("No bad password attempts.\n"));
                return True;
        }
 
-       if (!pdb_get_account_policy(AP_RESET_COUNT_TIME, &resettime)) {
+       become_root();
+       res = pdb_get_account_policy(AP_RESET_COUNT_TIME, &resettime);
+       unbecome_root();
+
+       if (!res) {
                DEBUG(0, ("pdb_update_bad_password_count: pdb_get_account_policy failed.\n"));
                return False;
        }
@@ -2306,7 +2084,7 @@ BOOL pdb_update_bad_password_count(SAM_ACCOUNT *sampass, BOOL *updated)
        LastBadPassword = pdb_get_bad_password_time(sampass);
        DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n", 
                   (uint32) LastBadPassword, resettime, (uint32)time(NULL)));
-       if (time(NULL) > (LastBadPassword + (time_t)resettime*60)){
+       if (time(NULL) > (LastBadPassword + convert_uint32_to_time_t(resettime)*60)){
                pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
                pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
                if (updated) {
@@ -2321,20 +2099,23 @@ BOOL pdb_update_bad_password_count(SAM_ACCOUNT *sampass, BOOL *updated)
  Update the ACB_AUTOLOCK flag checking the AP_LOCK_ACCOUNT_DURATION 
 *********************************************************************/
 
-BOOL pdb_update_autolock_flag(SAM_ACCOUNT *sampass, BOOL *updated)
+bool pdb_update_autolock_flag(struct samu *sampass, bool *updated)
 {
        uint32 duration;
        time_t LastBadPassword;
+       bool res;
 
-       if (!sampass) return False;
        if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) {
                DEBUG(9, ("pdb_update_autolock_flag: Account %s not autolocked, no check needed\n",
                        pdb_get_username(sampass)));
                return True;
        }
 
-       if (!pdb_get_account_policy(AP_LOCK_ACCOUNT_DURATION, &duration)) {
+       become_root();
+       res = pdb_get_account_policy(AP_LOCK_ACCOUNT_DURATION, &duration);
+       unbecome_root();
+
+       if (!res) {
                DEBUG(0, ("pdb_update_autolock_flag: pdb_get_account_policy failed.\n"));
                return False;
        }
@@ -2344,19 +2125,20 @@ BOOL pdb_update_autolock_flag(SAM_ACCOUNT *sampass, BOOL *updated)
                DEBUG(9, ("pdb_update_autolock_flag: No reset duration, can't reset autolock\n"));
                return True;
        }
-                     
+
        LastBadPassword = pdb_get_bad_password_time(sampass);
        DEBUG(7, ("pdb_update_autolock_flag: Account %s, LastBadPassword=%d, duration=%d, current time =%d.\n",
                  pdb_get_username(sampass), (uint32)LastBadPassword, duration*60, (uint32)time(NULL)));
 
        if (LastBadPassword == (time_t)0) {
-               DEBUG(1,("pdb_update_autolock_flag: Account %s administratively locked out with no \
-bad password time. Leaving locked out.\n",
-                       pdb_get_username(sampass) ));
-                       return True;
+               DEBUG(1,("pdb_update_autolock_flag: Account %s "
+                        "administratively locked out with no bad password "
+                        "time. Leaving locked out.\n",
+                        pdb_get_username(sampass) ));
+               return True;
        }
 
-       if ((time(NULL) > (LastBadPassword + (time_t) duration * 60))) {
+       if ((time(NULL) > (LastBadPassword + convert_uint32_to_time_t(duration) * 60))) {
                pdb_set_acct_ctrl(sampass,
                                  pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK,
                                  PDB_CHANGED);
@@ -2366,7 +2148,7 @@ bad password time. Leaving locked out.\n",
                        *updated = True;
                }
        }
-       
+
        return True;
 }
 
@@ -2374,17 +2156,17 @@ bad password time. Leaving locked out.\n",
  Increment the bad_password_count 
 *********************************************************************/
 
-BOOL pdb_increment_bad_password_count(SAM_ACCOUNT *sampass)
+bool pdb_increment_bad_password_count(struct samu *sampass)
 {
        uint32 account_policy_lockout;
-       BOOL autolock_updated = False, badpw_updated = False;
-
-       if (!sampass)
-               return False;
+       bool autolock_updated = False, badpw_updated = False;
+       bool ret;
 
        /* Retrieve the account lockout policy */
-       if (!pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT,
-                               &account_policy_lockout)) {
+       become_root();
+       ret = pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT, &account_policy_lockout);
+       unbecome_root();
+       if ( !ret ) {
                DEBUG(0, ("pdb_increment_bad_password_count: pdb_get_account_policy failed.\n"));
                return False;
        }
@@ -2427,3 +2209,201 @@ BOOL pdb_increment_bad_password_count(SAM_ACCOUNT *sampass)
 
        return True;
 }
+
+bool is_dc_trusted_domain_situation(const char *domain_name)
+{
+       return IS_DC && !strequal(domain_name, lp_workgroup());
+}
+
+/*******************************************************************
+ Wrapper around retrieving the clear text trust account password.
+ appropriate account name is stored in account_name.
+ Caller must free password, but not account_name.
+*******************************************************************/
+
+bool get_trust_pw_clear(const char *domain, char **ret_pwd,
+                       const char **account_name, uint32 *channel)
+{
+       char *pwd;
+       time_t last_set_time;
+
+       /* if we are a DC and this is not our domain, then lookup an account
+        * for the domain trust */
+
+       if (is_dc_trusted_domain_situation(domain)) {
+               if (!lp_allow_trusted_domains()) {
+                       return false;
+               }
+
+               if (!pdb_get_trusteddom_pw(domain, ret_pwd, NULL,
+                                          &last_set_time))
+               {
+                       DEBUG(0, ("get_trust_pw: could not fetch trust "
+                               "account password for trusted domain %s\n",
+                               domain));
+                       return false;
+               }
+
+               if (channel != NULL) {
+                       *channel = SEC_CHAN_DOMAIN;
+               }
+
+               if (account_name != NULL) {
+                       *account_name = lp_workgroup();
+               }
+
+               return true;
+       }
+
+       /*
+        * Since we can only be member of one single domain, we are now
+        * in a member situation:
+        *
+        *  -  Either we are a DC (selfjoined) and the domain is our
+        *     own domain.
+        *  -  Or we are on a member and the domain is our own or some
+        *     other (potentially trusted) domain.
+        *
+        * In both cases, we can only get the machine account password
+        * for our own domain to connect to our own dc. (For a member,
+        * request to trusted domains are performed through our dc.)
+        *
+        * So we simply use our own domain name to retrieve the
+        * machine account passowrd and ignore the request domain here.
+        */
+
+       pwd = secrets_fetch_machine_password(lp_workgroup(), &last_set_time, channel);
+
+       if (pwd != NULL) {
+               *ret_pwd = pwd;
+               if (account_name != NULL) {
+                       *account_name = global_myname();
+               }
+
+               return true;
+       }
+
+       DEBUG(5, ("get_trust_pw_clear: could not fetch clear text trust "
+                 "account password for domain %s\n", domain));
+       return false;
+}
+
+/*******************************************************************
+ Wrapper around retrieving the trust account password.
+ appropriate account name is stored in account_name.
+*******************************************************************/
+
+bool get_trust_pw_hash(const char *domain, uint8 ret_pwd[16],
+                      const char **account_name, uint32 *channel)
+{
+       char *pwd = NULL;
+       time_t last_set_time;
+
+       if (get_trust_pw_clear(domain, &pwd, account_name, channel)) {
+               E_md4hash(pwd, ret_pwd);
+               SAFE_FREE(pwd);
+               return true;
+       } else if (is_dc_trusted_domain_situation(domain)) {
+               return false;
+       }
+
+       /* as a fallback, try to get the hashed pwd directly from the tdb... */
+
+       if (secrets_fetch_trust_account_password_legacy(domain, ret_pwd,
+                                                       &last_set_time,
+                                                       channel))
+       {
+               if (account_name != NULL) {
+                       *account_name = global_myname();
+               }
+
+               return true;
+       }
+
+       DEBUG(5, ("get_trust_pw_hash: could not fetch trust account "
+               "password for domain %s\n", domain));
+       return False;
+}
+
+struct samr_LogonHours get_logon_hours_from_pdb(TALLOC_CTX *mem_ctx,
+                                               struct samu *pw)
+{
+       struct samr_LogonHours hours;
+       const int units_per_week = 168;
+
+       ZERO_STRUCT(hours);
+       hours.bits = talloc_array(mem_ctx, uint8_t, units_per_week);
+       if (!hours.bits) {
+               return hours;
+       }
+
+       hours.units_per_week = units_per_week;
+       memset(hours.bits, 0xFF, units_per_week);
+
+       if (pdb_get_hours(pw)) {
+               memcpy(hours.bits, pdb_get_hours(pw),
+                      MIN(pdb_get_hours_len(pw), units_per_week));
+       }
+
+       return hours;
+}
+
+/****************************************************************
+****************************************************************/
+
+NTSTATUS smb_create_user(TALLOC_CTX *mem_ctx,
+                        uint32_t acct_flags,
+                        const char *account,
+                        struct passwd **passwd_p)
+{
+       struct passwd *passwd;
+       char *add_script = NULL;
+
+       passwd = Get_Pwnam_alloc(mem_ctx, account);
+       if (passwd) {
+               *passwd_p = passwd;
+               return NT_STATUS_OK;
+       }
+
+       /* Create appropriate user */
+       if (acct_flags & ACB_NORMAL) {
+               add_script = talloc_strdup(mem_ctx, lp_adduser_script());
+       } else if ( (acct_flags & ACB_WSTRUST) ||
+                   (acct_flags & ACB_SVRTRUST) ||
+                   (acct_flags & ACB_DOMTRUST) ) {
+               add_script = talloc_strdup(mem_ctx, lp_addmachine_script());
+       } else {
+               DEBUG(1, ("Unknown user type: %s\n",
+                         pdb_encode_acct_ctrl(acct_flags, NEW_PW_FORMAT_SPACE_PADDED_LEN)));
+               return NT_STATUS_UNSUCCESSFUL;
+       }
+
+       if (!add_script) {
+               return NT_STATUS_NO_MEMORY;
+       }
+
+       if (*add_script) {
+               int add_ret;
+               add_script = talloc_all_string_sub(mem_ctx, add_script,
+                                                  "%u", account);
+               if (!add_script) {
+                       return NT_STATUS_NO_MEMORY;
+               }
+               add_ret = smbrun(add_script, NULL);
+               DEBUG(add_ret ? 0 : 1,("fetch_account: Running the command `%s' "
+                        "gave %d\n", add_script, add_ret));
+               if (add_ret == 0) {
+                       smb_nscd_flush_user_cache();
+               }
+       }
+
+       /* try and find the possible unix account again */
+       passwd = Get_Pwnam_alloc(mem_ctx, account);
+       if (!passwd) {
+               return NT_STATUS_NO_SUCH_USER;
+       }
+
+       *passwd_p = passwd;
+
+       return NT_STATUS_OK;
+}