Fix bug 4901
[samba.git] / source / passdb / pdb_ldap.c
index a945867967bc0c4b4a7a245c2bae14940226d653..d941abb00e68763279dda1dfb0a32e49c07f8581 100644 (file)
@@ -159,7 +159,8 @@ static const char** get_userattr_delete_list( TALLOC_CTX *mem_ctx,
 
 static const char* get_objclass_filter( int schema_ver )
 {
-       static fstring objclass_filter;
+       fstring objclass_filter;
+       char *result;
        
        switch( schema_ver ) {
                case SCHEMAVER_SAMBAACCOUNT:
@@ -170,10 +171,13 @@ static const char* get_objclass_filter( int schema_ver )
                        break;
                default:
                        DEBUG(0,("get_objclass_filter: Invalid schema version specified!\n"));
+                       objclass_filter[0] = '\0';
                        break;
        }
        
-       return objclass_filter; 
+       result = talloc_strdup(talloc_tos(), objclass_filter);
+       SMB_ASSERT(result != NULL);
+       return result;
 }
 
 /*****************************************************************
@@ -189,8 +193,8 @@ static NTSTATUS ldapsam_get_seq_num(struct pdb_methods *my_methods, time_t *seq_
        TALLOC_CTX *mem_ctx;
        char **values = NULL;
        int rc, num_result, num_values, rid;
-       pstring suffix;
-       fstring tok;
+       char *suffix = NULL;
+       char *tok;
        const char *p;
        const char **attrs;
 
@@ -235,16 +239,25 @@ static NTSTATUS ldapsam_get_seq_num(struct pdb_methods *my_methods, time_t *seq_
                /* csn=20050126161620Z#0000001#00#00000 */
                attrs[0] = talloc_strdup(mem_ctx, "syncreplCookie");
                attrs[1] = NULL;
-               pstr_sprintf( suffix, "cn=syncrepl%d,%s", rid, lp_ldap_suffix());
-
+               suffix = talloc_asprintf(mem_ctx,
+                               "cn=syncrepl%d,%s", rid, lp_ldap_suffix());
+               if (!suffix) {
+                       ntstatus = NT_STATUS_NO_MEMORY;
+                       goto done;
+               }
        } else {
 
                /* provider contextCSN */
                /* 20050126161620Z#000009#00#000000 */
                attrs[0] = talloc_strdup(mem_ctx, "contextCSN");
                attrs[1] = NULL;
-               pstr_sprintf( suffix, "cn=ldapsync,%s", lp_ldap_suffix());
+               suffix = talloc_asprintf(mem_ctx,
+                               "cn=ldapsync,%s", lp_ldap_suffix());
 
+               if (!suffix) {
+                       ntstatus = NT_STATUS_NO_MEMORY;
+                       goto done;
+               }
        }
 
        rc = smbldap_search(ldap_state->smbldap_state, suffix,
@@ -279,7 +292,7 @@ static NTSTATUS ldapsam_get_seq_num(struct pdb_methods *my_methods, time_t *seq_
        }
 
        p = values[0];
-       if (!next_token(&p, tok, "#", sizeof(tok))) {
+       if (!next_token_talloc(mem_ctx, &p, &tok, "#")) {
                DEBUG(0,("ldapsam_get_seq_num: failed to parse sequence number\n"));
                goto done;
        }
@@ -316,13 +329,14 @@ static NTSTATUS ldapsam_get_seq_num(struct pdb_methods *my_methods, time_t *seq_
  Run the search by name.
 ******************************************************************/
 
-int ldapsam_search_suffix_by_name(struct ldapsam_privates *ldap_state, 
+int ldapsam_search_suffix_by_name(struct ldapsam_privates *ldap_state,
                                          const char *user,
                                          LDAPMessage ** result,
                                          const char **attr)
 {
-       pstring filter;
+       char *filter = NULL;
        char *escape_user = escape_ldap_string_alloc(user);
+       int ret = -1;
 
        if (!escape_user) {
                return LDAP_NO_MEMORY;
@@ -332,37 +346,50 @@ int ldapsam_search_suffix_by_name(struct ldapsam_privates *ldap_state,
         * in the filter expression, replace %u with the real name
         * so in ldap filter, %u MUST exist :-)
         */
-       pstr_sprintf(filter, "(&%s%s)", "(uid=%u)", 
+       filter = talloc_asprintf(talloc_tos(), "(&%s%s)", "(uid=%u)",
                get_objclass_filter(ldap_state->schema_ver));
-
-       /* 
+       if (!filter) {
+               SAFE_FREE(escape_user);
+               return LDAP_NO_MEMORY;
+       }
+       /*
         * have to use this here because $ is filtered out
-          * in pstring_sub
+        * in string_sub
         */
-       
 
-       all_string_sub(filter, "%u", escape_user, sizeof(pstring));
+       filter = talloc_all_string_sub(talloc_tos(),
+                               filter, "%u", escape_user);
        SAFE_FREE(escape_user);
+       if (!filter) {
+               return LDAP_NO_MEMORY;
+       }
 
-       return smbldap_search_suffix(ldap_state->smbldap_state, filter, attr, result);
+       ret = smbldap_search_suffix(ldap_state->smbldap_state,
+                       filter, attr, result);
+       TALLOC_FREE(filter);
+       return ret;
 }
 
 /*******************************************************************
  Run the search by rid.
 ******************************************************************/
 
-static int ldapsam_search_suffix_by_rid (struct ldapsam_privates *ldap_state, 
-                                        uint32 rid, LDAPMessage ** result, 
+static int ldapsam_search_suffix_by_rid (struct ldapsam_privates *ldap_state,
+                                        uint32 rid, LDAPMessage ** result,
                                         const char **attr)
 {
-       pstring filter;
+       char *filter = NULL;
        int rc;
 
-       pstr_sprintf(filter, "(&(rid=%i)%s)", rid, 
+       filter = talloc_asprintf(talloc_tos(), "(&(rid=%i)%s)", rid,
                get_objclass_filter(ldap_state->schema_ver));
-       
-       rc = smbldap_search_suffix(ldap_state->smbldap_state, filter, attr, result);
-       
+       if (!filter) {
+               return LDAP_NO_MEMORY;
+       }
+
+       rc = smbldap_search_suffix(ldap_state->smbldap_state,
+                       filter, attr, result);
+       TALLOC_FREE(filter);
        return rc;
 }
 
@@ -370,21 +397,27 @@ static int ldapsam_search_suffix_by_rid (struct ldapsam_privates *ldap_state,
  Run the search by SID.
 ******************************************************************/
 
-static int ldapsam_search_suffix_by_sid (struct ldapsam_privates *ldap_state, 
-                                        const DOM_SID *sid, LDAPMessage ** result, 
-                                        const char **attr)
+static int ldapsam_search_suffix_by_sid (struct ldapsam_privates *ldap_state,
+                                const DOM_SID *sid, LDAPMessage ** result,
+                                const char **attr)
 {
-       pstring filter;
+       char *filter = NULL;
        int rc;
        fstring sid_string;
 
-       pstr_sprintf(filter, "(&(%s=%s)%s)", 
-               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID),
-               sid_to_string(sid_string, sid), 
+       filter = talloc_asprintf(talloc_tos(), "(&(%s=%s)%s)",
+               get_userattr_key2string(ldap_state->schema_ver,
+                       LDAP_ATTR_USER_SID),
+               sid_to_fstring(sid_string, sid),
                get_objclass_filter(ldap_state->schema_ver));
-               
-       rc = smbldap_search_suffix(ldap_state->smbldap_state, filter, attr, result);
-       
+       if (!filter) {
+               return LDAP_NO_MEMORY;
+       }
+
+       rc = smbldap_search_suffix(ldap_state->smbldap_state,
+                       filter, attr, result);
+
+       TALLOC_FREE(filter);
        return rc;
 }
 
@@ -437,28 +470,32 @@ static int ldapsam_delete_entry(struct ldapsam_privates *priv,
        if (ptr != NULL) {
                ber_free(ptr, 0);
        }
-       
+
        smbldap_set_mod(&mods, LDAP_MOD_DELETE, "objectClass", objectclass);
        talloc_autofree_ldapmod(mem_ctx, mods);
-       
+
        return smbldap_modify(priv->smbldap_state, dn, mods);
 }
-                 
+
 static time_t ldapsam_get_entry_timestamp( struct ldapsam_privates *ldap_state, LDAPMessage * entry)
 {
-       pstring temp;   
+       char *temp;
        struct tm tm;
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
+       temp = smbldap_talloc_single_attribute(ldap_state->smbldap_state->ldap_struct, entry,
                        get_userattr_key2string(ldap_state->schema_ver,LDAP_ATTR_MOD_TIMESTAMP),
-                       temp))
+                       talloc_tos());
+       if (!temp) {
                return (time_t) 0;
+       }
 
        if ( !strptime(temp, "%Y%m%d%H%M%SZ", &tm)) {
                DEBUG(2,("ldapsam_get_entry_timestamp: strptime failed on: %s\n",
                        (char*)temp));
+               TALLOC_FREE(temp);
                return (time_t) 0;
        }
+       TALLOC_FREE(temp);
        tzset();
        return timegm(&tm);
 }
@@ -468,100 +505,104 @@ static time_t ldapsam_get_entry_timestamp( struct ldapsam_privates *ldap_state,
  (Based on init_sam_from_buffer in pdb_tdb.c)
 *********************************************************************/
 
-static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state, 
+static bool init_sam_from_ldap(struct ldapsam_privates *ldap_state,
                                struct samu * sampass,
                                LDAPMessage * entry)
 {
        time_t  logon_time,
                        logoff_time,
                        kickoff_time,
-                       pass_last_set_time, 
-                       pass_can_change_time, 
+                       pass_last_set_time,
+                       pass_can_change_time,
                        pass_must_change_time,
                        ldap_entry_time,
                        bad_password_time;
-       pstring         username, 
-                       domain,
-                       nt_username,
-                       fullname,
-                       homedir,
-                       dir_drive,
-                       logon_script,
-                       profile_path,
-                       acct_desc,
-                       workstations;
-       char            munged_dial[2048];
-       uint32          user_rid; 
+       char *username = NULL,
+                       *domain = NULL,
+                       *nt_username = NULL,
+                       *fullname = NULL,
+                       *homedir = NULL,
+                       *dir_drive = NULL,
+                       *logon_script = NULL,
+                       *profile_path = NULL,
+                       *acct_desc = NULL,
+                       *workstations = NULL,
+                       *munged_dial = NULL;
+       uint32          user_rid;
        uint8           smblmpwd[LM_HASH_LEN],
                        smbntpwd[NT_HASH_LEN];
-       BOOL            use_samba_attrs = True;
+       bool            use_samba_attrs = True;
        uint32          acct_ctrl = 0;
        uint16          logon_divs;
-       uint16          bad_password_count = 0, 
+       uint16          bad_password_count = 0,
                        logon_count = 0;
        uint32 hours_len;
        uint8           hours[MAX_HOURS_LEN];
-       pstring temp;
+       char *temp = NULL;
        LOGIN_CACHE     *cache_entry = NULL;
        uint32          pwHistLen;
-       pstring         tmpstring;
-       BOOL expand_explicit = lp_passdb_expand_explicit();
-
-       /*
-        * do a little initialization
-        */
-       username[0]     = '\0';
-       domain[0]       = '\0';
-       nt_username[0]  = '\0';
-       fullname[0]     = '\0';
-       homedir[0]      = '\0';
-       dir_drive[0]    = '\0';
-       logon_script[0] = '\0';
-       profile_path[0] = '\0';
-       acct_desc[0]    = '\0';
-       munged_dial[0]  = '\0';
-       workstations[0] = '\0';
-        
+       bool expand_explicit = lp_passdb_expand_explicit();
+       bool ret = false;
+       TALLOC_CTX *ctx = talloc_init("init_sam_from_ldap");
 
+       if (!ctx) {
+               return false;
+       }
        if (sampass == NULL || ldap_state == NULL || entry == NULL) {
                DEBUG(0, ("init_sam_from_ldap: NULL parameters found!\n"));
-               return False;
+               goto fn_exit;
        }
 
        if (priv2ld(ldap_state) == NULL) {
                DEBUG(0, ("init_sam_from_ldap: ldap_state->smbldap_state->"
                          "ldap_struct is NULL!\n"));
-               return False;
+               goto fn_exit;
        }
-       
-       if (!smbldap_get_single_pstring(priv2ld(ldap_state), entry, "uid",
-                                       username)) {
+
+       if (!(username = smbldap_talloc_single_attribute(priv2ld(ldap_state),
+                                       entry,
+                                       "uid",
+                                       ctx))) {
                DEBUG(1, ("init_sam_from_ldap: No uid attribute found for "
                          "this user!\n"));
-               return False;
+               goto fn_exit;
        }
 
        DEBUG(2, ("init_sam_from_ldap: Entry found for user: %s\n", username));
 
-       pstrcpy(nt_username, username);
+       nt_username = talloc_strdup(ctx, username);
+       if (!nt_username) {
+               goto fn_exit;
+       }
+
+       domain = talloc_strdup(ctx, ldap_state->domain_name);
+       if (!domain) {
+               goto fn_exit;
+       }
 
-       pstrcpy(domain, ldap_state->domain_name);
-       
        pdb_set_username(sampass, username, PDB_SET);
 
        pdb_set_domain(sampass, domain, PDB_DEFAULT);
        pdb_set_nt_username(sampass, nt_username, PDB_SET);
 
        /* deal with different attributes between the schema first */
-       
+
        if ( ldap_state->schema_ver == SCHEMAVER_SAMBASAMACCOUNT ) {
-               if (smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID), temp)) {
+               if ((temp = smbldap_talloc_single_attribute(
+                               ldap_state->smbldap_state->ldap_struct,
+                               entry,
+                               get_userattr_key2string(ldap_state->schema_ver,
+                                       LDAP_ATTR_USER_SID),
+                               ctx))!=NULL) {
                        pdb_set_user_sid_from_string(sampass, temp, PDB_SET);
                }
        } else {
-               if (smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_RID), temp)) {
+               if ((temp = smbldap_talloc_single_attribute(
+                               ldap_state->smbldap_state->ldap_struct,
+                               entry,
+                               get_userattr_key2string(ldap_state->schema_ver,
+                                       LDAP_ATTR_USER_RID),
+                               ctx))!=NULL) {
                        user_rid = (uint32)atol(temp);
                        pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
                }
@@ -569,58 +610,81 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
 
        if (pdb_get_init_flags(sampass,PDB_USERSID) == PDB_DEFAULT) {
                DEBUG(1, ("init_sam_from_ldap: no %s or %s attribute found for this user %s\n", 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID),
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_RID),
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_USER_SID),
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_USER_RID),
                        username));
                return False;
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_LAST_SET), temp)) {
-               /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_PWD_LAST_SET),
+                       ctx);
+       if (temp) {
                pass_last_set_time = (time_t) atol(temp);
-               pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
+               pdb_set_pass_last_set_time(sampass,
+                               pass_last_set_time, PDB_SET);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_TIME), temp)) {
-               /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_LOGON_TIME),
+                       ctx);
+       if (temp) {
                logon_time = (time_t) atol(temp);
                pdb_set_logon_time(sampass, logon_time, PDB_SET);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGOFF_TIME), temp)) {
-               /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_LOGOFF_TIME),
+                       ctx);
+       if (temp) {
                logoff_time = (time_t) atol(temp);
                pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_KICKOFF_TIME), temp)) {
-               /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_KICKOFF_TIME),
+                       ctx);
+       if (temp) {
                kickoff_time = (time_t) atol(temp);
                pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_CAN_CHANGE), temp)) {
-               /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_PWD_CAN_CHANGE),
+                       ctx);
+       if (temp) {
                pass_can_change_time = (time_t) atol(temp);
-               pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
+               pdb_set_pass_can_change_time(sampass,
+                               pass_can_change_time, PDB_SET);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_MUST_CHANGE), temp)) {    
-               /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_PWD_MUST_CHANGE),
+                       ctx);
+       if (temp) {
                pass_must_change_time = (time_t) atol(temp);
-               pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
+               pdb_set_pass_must_change_time(sampass,
+                               pass_must_change_time, PDB_SET);
        }
 
        /* recommend that 'gecos' and 'displayName' should refer to the same
@@ -629,98 +693,142 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
         * that fits your needs; using cn then displayName rather than 'userFullName'
         */
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_DISPLAY_NAME), fullname)) {
-               if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-                               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_CN), fullname)) {
-                       /* leave as default */
-               } else {
+       fullname = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_DISPLAY_NAME),
+                       ctx);
+       if (fullname) {
+               pdb_set_fullname(sampass, fullname, PDB_SET);
+       } else {
+               fullname = smbldap_talloc_single_attribute(
+                               ldap_state->smbldap_state->ldap_struct,
+                               entry,
+                               get_userattr_key2string(ldap_state->schema_ver,
+                                       LDAP_ATTR_CN),
+                               ctx);
+               if (fullname) {
                        pdb_set_fullname(sampass, fullname, PDB_SET);
                }
-       } else {
-               pdb_set_fullname(sampass, fullname, PDB_SET);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_HOME_DRIVE), dir_drive)) 
-       {
-               pdb_set_dir_drive( sampass, lp_logon_drive(), PDB_DEFAULT );
-       } else {
+       dir_drive = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_HOME_DRIVE),
+                       ctx);
+       if (dir_drive) {
                pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
+       } else {
+               pdb_set_dir_drive( sampass, lp_logon_drive(), PDB_DEFAULT );
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_HOME_PATH), homedir)) 
-       {
-               pdb_set_homedir( sampass, 
-                       talloc_sub_basic(sampass, username, domain,
-                                        lp_logon_home()),
-                       PDB_DEFAULT );
-       } else {
-               pstrcpy( tmpstring, homedir );
+       homedir = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_HOME_PATH),
+                       ctx);
+       if (homedir) {
                if (expand_explicit) {
-                       standard_sub_basic( username, domain, tmpstring,
-                                           sizeof(tmpstring) );
+                       homedir = talloc_sub_basic(ctx,
+                                               username,
+                                               domain,
+                                               homedir);
+                       if (!homedir) {
+                               goto fn_exit;
+                       }
                }
-               pdb_set_homedir(sampass, tmpstring, PDB_SET);
+               pdb_set_homedir(sampass, homedir, PDB_SET);
+       } else {
+               pdb_set_homedir(sampass,
+                       talloc_sub_basic(ctx, username, domain,
+                                        lp_logon_home()),
+                       PDB_DEFAULT);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_SCRIPT), logon_script)) 
-       {
-               pdb_set_logon_script( sampass, 
-                       talloc_sub_basic(sampass, username, domain,
-                                        lp_logon_script()), 
-                       PDB_DEFAULT );
-       } else {
-               pstrcpy( tmpstring, logon_script );
+       logon_script = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_LOGON_SCRIPT),
+                       ctx);
+       if (logon_script) {
                if (expand_explicit) {
-                       standard_sub_basic( username, domain, tmpstring,
-                                           sizeof(tmpstring) );
+                       logon_script = talloc_sub_basic(ctx,
+                                               username,
+                                               domain,
+                                               logon_script);
+                       if (!logon_script) {
+                               goto fn_exit;
+                       }
                }
-               pdb_set_logon_script(sampass, tmpstring, PDB_SET);
+               pdb_set_logon_script(sampass, logon_script, PDB_SET);
+       } else {
+               pdb_set_logon_script(sampass,
+                       talloc_sub_basic(ctx, username, domain,
+                                        lp_logon_script()),
+                       PDB_DEFAULT );
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PROFILE_PATH), profile_path)) 
-       {
-               pdb_set_profile_path( sampass, 
-                       talloc_sub_basic( sampass, username, domain,
-                                         lp_logon_path()),
-                       PDB_DEFAULT );
-       } else {
-               pstrcpy( tmpstring, profile_path );
+       profile_path = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_PROFILE_PATH),
+                       ctx);
+       if (profile_path) {
                if (expand_explicit) {
-                       standard_sub_basic( username, domain, tmpstring,
-                                           sizeof(tmpstring) );
+                       profile_path = talloc_sub_basic(ctx,
+                                               username,
+                                               domain,
+                                               profile_path);
+                       if (!profile_path) {
+                               goto fn_exit;
+                       }
                }
-               pdb_set_profile_path(sampass, tmpstring, PDB_SET);
+               pdb_set_profile_path(sampass, profile_path, PDB_SET);
+       } else {
+               pdb_set_profile_path(sampass,
+                       talloc_sub_basic(ctx, username, domain,
+                                         lp_logon_path()),
+                       PDB_DEFAULT );
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_DESC), acct_desc)) 
-       {
-               /* leave as default */
-       } else {
+       acct_desc = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_DESC),
+                       ctx);
+       if (acct_desc) {
                pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_WKS), workstations)) {
-               /* leave as default */;
-       } else {
+       workstations = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_USER_WKS),
+                       ctx);
+       if (workstations) {
                pdb_set_workstations(sampass, workstations, PDB_SET);
        }
 
-       if (!smbldap_get_single_attribute(ldap_state->smbldap_state->ldap_struct, entry, 
-               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_MUNGED_DIAL), munged_dial, sizeof(munged_dial))) {
-               /* leave as default */;
-       } else {
+       munged_dial = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_MUNGED_DIAL),
+                       ctx);
+       if (munged_dial) {
                pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
        }
-       
+
        /* FIXME: hours stuff should be cleaner */
-       
+
        logon_divs = 168;
        hours_len = 21;
        memset(hours, 0xff, hours_len);
@@ -729,7 +837,7 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
                char *user_dn;
                size_t pwd_len;
                char clear_text_pw[512];
-   
+
                /* Make call to Novell eDirectory ldap extension to get clear text password.
                        NOTE: This will only work if we have an SSL connection to eDirectory. */
                user_dn = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
@@ -760,25 +868,33 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
        }
 
        if (use_samba_attrs) {
-               if (!smbldap_get_single_pstring (ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LMPW), temp)) {
-                       /* leave as default */
-               } else {
+               temp = smbldap_talloc_single_attribute(
+                               ldap_state->smbldap_state->ldap_struct,
+                               entry,
+                               get_userattr_key2string(ldap_state->schema_ver,
+                                       LDAP_ATTR_LMPW),
+                               ctx);
+               if (temp) {
                        pdb_gethexpwd(temp, smblmpwd);
                        memset((char *)temp, '\0', strlen(temp)+1);
-                       if (!pdb_set_lanman_passwd(sampass, smblmpwd, PDB_SET))
-                               return False;
+                       if (!pdb_set_lanman_passwd(sampass, smblmpwd, PDB_SET)) {
+                               goto fn_exit;
+                       }
                        ZERO_STRUCT(smblmpwd);
                }
 
-               if (!smbldap_get_single_pstring (ldap_state->smbldap_state->ldap_struct, entry,
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_NTPW), temp)) {
-                       /* leave as default */
-               } else {
+               temp = smbldap_talloc_single_attribute(
+                               ldap_state->smbldap_state->ldap_struct,
+                               entry,
+                               get_userattr_key2string(ldap_state->schema_ver,
+                                       LDAP_ATTR_NTPW),
+                               ctx);
+               if (temp) {
                        pdb_gethexpwd(temp, smbntpwd);
                        memset((char *)temp, '\0', strlen(temp)+1);
-                       if (!pdb_set_nt_passwd(sampass, smbntpwd, PDB_SET))
-                               return False;
+                       if (!pdb_set_nt_passwd(sampass, smbntpwd, PDB_SET)) {
+                               goto fn_exit;
+                       }
                        ZERO_STRUCT(smbntpwd);
                }
        }
@@ -789,31 +905,42 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
        if (pwHistLen > 0){
                uint8 *pwhist = NULL;
                int i;
-               char history_string[MAX_PW_HISTORY_LEN*64];
+               char *history_string = TALLOC_ARRAY(ctx, char,
+                                               MAX_PW_HISTORY_LEN*64);
+
+               if (!history_string) {
+                       goto fn_exit;
+               }
 
                pwHistLen = MIN(pwHistLen, MAX_PW_HISTORY_LEN);
 
-               if ((pwhist = SMB_MALLOC_ARRAY(uint8, pwHistLen * PW_HISTORY_ENTRY_LEN)) == NULL){
-                       DEBUG(0, ("init_sam_from_ldap: malloc failed!\n"));
-                       return False;
+               if ((pwhist = TALLOC_ARRAY(ctx, uint8,
+                                       pwHistLen * PW_HISTORY_ENTRY_LEN)) ==
+                               NULL){
+                       DEBUG(0, ("init_sam_from_ldap: talloc failed!\n"));
+                       goto fn_exit;
                }
                memset(pwhist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
 
-               if (!smbldap_get_single_attribute(ldap_state->smbldap_state->ldap_struct, entry,
-                                                 get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_HISTORY),
-                                                 history_string, sizeof(history_string))) {
-                       /* leave as default - zeros */
-               } else {
-                       BOOL hex_failed = False;
+               if (smbldap_get_single_attribute(
+                               ldap_state->smbldap_state->ldap_struct,
+                               entry,
+                               get_userattr_key2string(ldap_state->schema_ver,
+                                       LDAP_ATTR_PWD_HISTORY),
+                               history_string,
+                               MAX_PW_HISTORY_LEN*64)) {
+                       bool hex_failed = false;
                        for (i = 0; i < pwHistLen; i++){
                                /* Get the 16 byte salt. */
-                               if (!pdb_gethexpwd(&history_string[i*64], &pwhist[i*PW_HISTORY_ENTRY_LEN])) {
-                                       hex_failed = True;
+                               if (!pdb_gethexpwd(&history_string[i*64],
+                                       &pwhist[i*PW_HISTORY_ENTRY_LEN])) {
+                                       hex_failed = true;
                                        break;
                                }
                                /* Get the 16 byte MD5 hash of salt+passwd. */
                                if (!pdb_gethexpwd(&history_string[(i*64)+32],
-                                               &pwhist[(i*PW_HISTORY_ENTRY_LEN)+PW_HISTORY_SALT_LEN])) {
+                                       &pwhist[(i*PW_HISTORY_ENTRY_LEN)+
+                                               PW_HISTORY_SALT_LEN])) {
                                        hex_failed = True;
                                        break;
                                }
@@ -825,58 +952,75 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
                        }
                }
                if (!pdb_set_pw_history(sampass, pwhist, pwHistLen, PDB_SET)){
-                       SAFE_FREE(pwhist);
-                       return False;
+                       goto fn_exit;
                }
-               SAFE_FREE(pwhist);
        }
 
-       if (!smbldap_get_single_pstring (ldap_state->smbldap_state->ldap_struct, entry,
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_ACB_INFO), temp)) {
-               acct_ctrl |= ACB_NORMAL;
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_ACB_INFO),
+                       ctx);
+       if (temp) {
                acct_ctrl = pdb_decode_acct_ctrl(temp);
 
-               if (acct_ctrl == 0)
+               if (acct_ctrl == 0) {
                        acct_ctrl |= ACB_NORMAL;
+               }
 
                pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
+       } else {
+               acct_ctrl |= ACB_NORMAL;
        }
 
        pdb_set_hours_len(sampass, hours_len, PDB_SET);
        pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_BAD_PASSWORD_COUNT), temp)) {
-                       /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_BAD_PASSWORD_COUNT),
+                       ctx);
+       if (temp) {
                bad_password_count = (uint32) atol(temp);
-               pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
+               pdb_set_bad_password_count(sampass,
+                               bad_password_count, PDB_SET);
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_BAD_PASSWORD_TIME), temp)) {
-               /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_BAD_PASSWORD_TIME),
+                       ctx);
+       if (temp) {
                bad_password_time = (time_t) atol(temp);
                pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
        }
 
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-                       get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_COUNT), temp)) {
-                       /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_LOGON_COUNT),
+                       ctx);
+       if (temp) {
                logon_count = (uint32) atol(temp);
                pdb_set_logon_count(sampass, logon_count, PDB_SET);
        }
 
        /* pdb_set_unknown_6(sampass, unknown6, PDB_SET); */
 
-       if(!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry,
-               get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_HOURS), temp)) {
-                       /* leave as default */
-       } else {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_userattr_key2string(ldap_state->schema_ver,
+                               LDAP_ATTR_LOGON_HOURS),
+                       ctx);
+       if (temp) {
                pdb_gethexhours(temp, hours);
                memset((char *)temp, '\0', strlen(temp) +1);
                pdb_set_hours(sampass, hours, PDB_SET);
@@ -884,8 +1028,12 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
        }
 
        if (lp_parm_bool(-1, "ldapsam", "trusted", False)) {
-               if (smbldap_get_single_pstring(priv2ld(ldap_state), entry,
-                                              "uidNumber", temp)) {
+               temp = smbldap_talloc_single_attribute(
+                               priv2ld(ldap_state),
+                               entry,
+                               "uidNumber",
+                               ctx);
+               if (temp) {
                        /* We've got a uid, feed the cache */
                        uid_t uid = strtoul(temp, NULL, 10);
                        store_uid_sid_cache(pdb_get_user_sid(sampass), uid);
@@ -893,43 +1041,52 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
        }
 
        /* check the timestamp of the cache vs ldap entry */
-       if (!(ldap_entry_time = ldapsam_get_entry_timestamp(ldap_state, 
-                                                           entry)))
-               return True;
+       if (!(ldap_entry_time = ldapsam_get_entry_timestamp(ldap_state,
+                                                           entry))) {
+               ret = true;
+               goto fn_exit;
+       }
 
        /* see if we have newer updates */
        if (!(cache_entry = login_cache_read(sampass))) {
                DEBUG (9, ("No cache entry, bad count = %u, bad time = %u\n",
                           (unsigned int)pdb_get_bad_password_count(sampass),
                           (unsigned int)pdb_get_bad_password_time(sampass)));
-               return True;
+               ret = true;
+               goto fn_exit;
        }
 
-       DEBUG(7, ("ldap time is %u, cache time is %u, bad time = %u\n", 
-                 (unsigned int)ldap_entry_time, (unsigned int)cache_entry->entry_timestamp, 
+       DEBUG(7, ("ldap time is %u, cache time is %u, bad time = %u\n",
+                 (unsigned int)ldap_entry_time,
+                 (unsigned int)cache_entry->entry_timestamp,
                  (unsigned int)cache_entry->bad_password_time));
 
        if (ldap_entry_time > cache_entry->entry_timestamp) {
                /* cache is older than directory , so
-                  we need to delete the entry but allow the 
+                  we need to delete the entry but allow the
                   fields to be written out */
                login_cache_delentry(sampass);
        } else {
                /* read cache in */
-               pdb_set_acct_ctrl(sampass, 
-                                 pdb_get_acct_ctrl(sampass) | 
+               pdb_set_acct_ctrl(sampass,
+                                 pdb_get_acct_ctrl(sampass) |
                                  (cache_entry->acct_ctrl & ACB_AUTOLOCK),
                                  PDB_SET);
-               pdb_set_bad_password_count(sampass, 
-                                          cache_entry->bad_password_count, 
+               pdb_set_bad_password_count(sampass,
+                                          cache_entry->bad_password_count,
                                           PDB_SET);
-               pdb_set_bad_password_time(sampass, 
-                                         cache_entry->bad_password_time, 
+               pdb_set_bad_password_time(sampass,
+                                         cache_entry->bad_password_time,
                                          PDB_SET);
        }
 
+       ret = true;
+
+  fn_exit:
+
+       TALLOC_FREE(ctx);
        SAFE_FREE(cache_entry);
-       return True;
+       return ret;
 }
 
 /**********************************************************************
@@ -937,13 +1094,13 @@ static BOOL init_sam_from_ldap(struct ldapsam_privates *ldap_state,
  (Based on init_buffer_from_sam in pdb_tdb.c)
 *********************************************************************/
 
-static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state, 
+static bool init_ldap_from_sam (struct ldapsam_privates *ldap_state,
                                LDAPMessage *existing,
                                LDAPMod *** mods, struct samu * sampass,
-                               BOOL (*need_update)(const struct samu *,
+                               bool (*need_update)(const struct samu *,
                                                    enum pdb_elements))
 {
-       pstring temp;
+       char *temp = NULL;
        uint32 rid;
 
        if (mods == NULL || sampass == NULL) {
@@ -953,7 +1110,7 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
 
        *mods = NULL;
 
-       /* 
+       /*
         * took out adding "objectclass: sambaAccount"
         * do this on a per-mod basis
         */
@@ -974,31 +1131,35 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
        if (need_update(sampass, PDB_USERSID)) {
                fstring sid_string;
                const DOM_SID *user_sid = pdb_get_user_sid(sampass);
-               
+
                switch ( ldap_state->schema_ver ) {
                        case SCHEMAVER_SAMBAACCOUNT:
                                if (!sid_peek_check_rid(&ldap_state->domain_sid, user_sid, &rid)) {
                                        DEBUG(1, ("init_ldap_from_sam: User's SID (%s) is not for this domain (%s), cannot add to LDAP!\n", 
-                                                 sid_string_static(user_sid), 
-                                                 sid_string_static(&ldap_state->domain_sid)));
+                                                 sid_string_dbg(user_sid),
+                                                 sid_string_dbg(
+                                                         &ldap_state->domain_sid)));
                                        return False;
                                }
-                               slprintf(temp, sizeof(temp) - 1, "%i", rid);
+                               if (asprintf(&temp, "%i", rid) < 0) {
+                                       return false;
+                               }
                                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_RID), 
                                        temp);
+                               SAFE_FREE(temp);
                                break;
-                               
+
                        case SCHEMAVER_SAMBASAMACCOUNT:
                                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID), 
-                                       sid_to_string(sid_string, user_sid));                                 
+                                       sid_to_fstring(sid_string, user_sid));
                                break;
-                               
+
                        default:
                                DEBUG(0,("init_ldap_from_sam: unknown schema version specified\n"));
                                break;
-               }               
+               }
        }
 
        /* we don't need to store the primary group RID - so leaving it
@@ -1007,38 +1168,42 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
        if (need_update(sampass, PDB_GROUPSID)) {
                fstring sid_string;
                const DOM_SID *group_sid = pdb_get_group_sid(sampass);
-               
+
                switch ( ldap_state->schema_ver ) {
                        case SCHEMAVER_SAMBAACCOUNT:
                                if (!sid_peek_check_rid(&ldap_state->domain_sid, group_sid, &rid)) {
                                        DEBUG(1, ("init_ldap_from_sam: User's Primary Group SID (%s) is not for this domain (%s), cannot add to LDAP!\n",
-                                                 sid_string_static(group_sid),
-                                                 sid_string_static(&ldap_state->domain_sid)));
+                                                 sid_string_dbg(group_sid),
+                                                 sid_string_dbg(
+                                                         &ldap_state->domain_sid)));
                                        return False;
                                }
 
-                               slprintf(temp, sizeof(temp) - 1, "%i", rid);
+                               if (asprintf(&temp, "%i", rid) < 0) {
+                                       return false;
+                               }
                                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                        get_userattr_key2string(ldap_state->schema_ver, 
                                        LDAP_ATTR_PRIMARY_GROUP_RID), temp);
+                               SAFE_FREE(temp);
                                break;
-                               
+
                        case SCHEMAVER_SAMBASAMACCOUNT:
                                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                        get_userattr_key2string(ldap_state->schema_ver, 
-                                       LDAP_ATTR_PRIMARY_GROUP_SID), sid_to_string(sid_string, group_sid));
+                                       LDAP_ATTR_PRIMARY_GROUP_SID), sid_to_fstring(sid_string, group_sid));
                                break;
-                               
+
                        default:
                                DEBUG(0,("init_ldap_from_sam: unknown schema version specified\n"));
                                break;
                }
-               
+
        }
-       
+
        /* displayName, cn, and gecos should all be the same
         *  most easily accomplished by giving them the same OID
-        *  gecos isn't set here b/c it should be handled by the 
+        *  gecos isn't set here b/c it should be handled by the
         *  add-user script
         *  We change displayName only and fall back to cn if
         *  it does not exist.
@@ -1058,17 +1223,17 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_WKS), 
                        pdb_get_workstations(sampass));
-       
+
        if (need_update(sampass, PDB_MUNGEDDIAL))
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_MUNGED_DIAL), 
                        pdb_get_munged_dial(sampass));
-       
+
        if (need_update(sampass, PDB_SMBHOME))
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_HOME_PATH), 
                        pdb_get_homedir(sampass));
-                       
+
        if (need_update(sampass, PDB_DRIVE))
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_HOME_DRIVE), 
@@ -1084,43 +1249,58 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PROFILE_PATH), 
                        pdb_get_profile_path(sampass));
 
-       slprintf(temp, sizeof(temp) - 1, "%li", pdb_get_logon_time(sampass));
+       if (asprintf(&temp, "%li", pdb_get_logon_time(sampass)) < 0) {
+               return false;
+       }
        if (need_update(sampass, PDB_LOGONTIME))
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGON_TIME), temp);
+       SAFE_FREE(temp);
 
-       slprintf(temp, sizeof(temp) - 1, "%li", pdb_get_logoff_time(sampass));
+       if (asprintf(&temp, "%li", pdb_get_logoff_time(sampass)) < 0) {
+               return false;
+       }
        if (need_update(sampass, PDB_LOGOFFTIME))
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LOGOFF_TIME), temp);
+       SAFE_FREE(temp);
 
-       slprintf (temp, sizeof (temp) - 1, "%li", pdb_get_kickoff_time(sampass));
+       if (asprintf(&temp, "%li", pdb_get_kickoff_time(sampass)) < 0) {
+               return false;
+       }
        if (need_update(sampass, PDB_KICKOFFTIME))
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_KICKOFF_TIME), temp);
+       SAFE_FREE(temp);
 
-       slprintf (temp, sizeof (temp) - 1, "%li", pdb_get_pass_can_change_time_noncalc(sampass));
+       if (asprintf(&temp, "%li", pdb_get_pass_can_change_time_noncalc(sampass)) < 0) {
+               return false;
+       }
        if (need_update(sampass, PDB_CANCHANGETIME))
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_CAN_CHANGE), temp);
+       SAFE_FREE(temp);
 
-       slprintf (temp, sizeof (temp) - 1, "%li", pdb_get_pass_must_change_time(sampass));
+       if (asprintf(&temp, "%li", pdb_get_pass_must_change_time(sampass)) < 0) {
+               return false;
+       }
        if (need_update(sampass, PDB_MUSTCHANGETIME))
                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_MUST_CHANGE), temp);
-
+       SAFE_FREE(temp);
 
        if ((pdb_get_acct_ctrl(sampass)&(ACB_WSTRUST|ACB_SVRTRUST|ACB_DOMTRUST))
                        || (lp_ldap_passwd_sync()!=LDAP_PASSWD_SYNC_ONLY)) {
 
                if (need_update(sampass, PDB_LMPASSWD)) {
-                       const uchar *lm_pw =  pdb_get_lanman_passwd(sampass);
+                       const uchar *lm_pw = pdb_get_lanman_passwd(sampass);
                        if (lm_pw) {
-                               pdb_sethexpwd(temp, lm_pw,
+                               char pwstr[34];
+                               pdb_sethexpwd(pwstr, lm_pw,
                                              pdb_get_acct_ctrl(sampass));
                                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                                 get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LMPW), 
-                                                temp);
+                                                pwstr);
                        } else {
                                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                                 get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_LMPW), 
@@ -1128,13 +1308,14 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
                        }
                }
                if (need_update(sampass, PDB_NTPASSWD)) {
-                       const uchar *nt_pw =  pdb_get_nt_passwd(sampass);
+                       const uchar *nt_pw = pdb_get_nt_passwd(sampass);
                        if (nt_pw) {
-                               pdb_sethexpwd(temp, nt_pw,
+                               char pwstr[34];
+                               pdb_sethexpwd(pwstr, nt_pw,
                                              pdb_get_acct_ctrl(sampass));
                                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                                 get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_NTPW), 
-                                                temp);
+                                                pwstr);
                        } else {
                                smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                                 get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_NTPW), 
@@ -1143,52 +1324,64 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
                }
 
                if (need_update(sampass, PDB_PWHISTORY)) {
+                       char *pwstr = NULL;
                        uint32 pwHistLen = 0;
                        pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
+
+                       pwstr = SMB_MALLOC_ARRAY(char, 1024);
+                       if (!pwstr) {
+                               return false;
+                       }
                        if (pwHistLen == 0) {
                                /* Remove any password history from the LDAP store. */
-                               memset(temp, '0', 64); /* NOTE !!!! '0' *NOT '\0' */
-                               temp[64] = '\0';
+                               memset(pwstr, '0', 64); /* NOTE !!!! '0' *NOT '\0' */
+                               pwstr[64] = '\0';
                        } else {
-                               int i; 
+                               int i;
                                uint32 currHistLen = 0;
                                const uint8 *pwhist = pdb_get_pw_history(sampass, &currHistLen);
                                if (pwhist != NULL) {
-                                       /* We can only store (sizeof(pstring)-1)/64 password history entries. */
-                                       pwHistLen = MIN(pwHistLen, ((sizeof(temp)-1)/64));
+                                       /* We can only store (1024-1/64 password history entries. */
+                                       pwHistLen = MIN(pwHistLen, ((1024-1)/64));
                                        for (i=0; i< pwHistLen && i < currHistLen; i++) {
                                                /* Store the salt. */
-                                               pdb_sethexpwd(&temp[i*64], &pwhist[i*PW_HISTORY_ENTRY_LEN], 0);
+                                               pdb_sethexpwd(&pwstr[i*64], &pwhist[i*PW_HISTORY_ENTRY_LEN], 0);
                                                /* Followed by the md5 hash of salt + md4 hash */
-                                               pdb_sethexpwd(&temp[(i*64)+32],
+                                               pdb_sethexpwd(&pwstr[(i*64)+32],
                                                        &pwhist[(i*PW_HISTORY_ENTRY_LEN)+PW_HISTORY_SALT_LEN], 0);
-                                               DEBUG(100, ("temp=%s\n", temp));
+                                               DEBUG(100, ("pwstr=%s\n", pwstr));
                                        }
-                               } 
+                               }
                        }
                        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                         get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_HISTORY), 
-                                        temp);
+                                        pwstr);
+                       SAFE_FREE(pwstr);
                }
 
                if (need_update(sampass, PDB_PASSLASTSET)) {
-                       slprintf (temp, sizeof (temp) - 1, "%li", pdb_get_pass_last_set_time(sampass));
+                       if (asprintf(&temp, "%li",
+                               pdb_get_pass_last_set_time(sampass)) < 0) {
+                               return false;
+                       }
                        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, existing, mods,
                                get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_PWD_LAST_SET), 
                                temp);
+                       SAFE_FREE(temp);
                }
        }
 
        if (need_update(sampass, PDB_HOURS)) {
                const uint8 *hours = pdb_get_hours(sampass);
                if (hours) {
-                       pdb_sethexhours(temp, hours);
+                       char hourstr[44];
+                       pdb_sethexhours(hourstr, hours);
                        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct,
                                existing,
                                mods,
                                get_userattr_key2string(ldap_state->schema_ver,
                                                LDAP_ATTR_LOGON_HOURS),
-                               temp);
+                               hourstr);
                }
        }
 
@@ -1197,7 +1390,7 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_ACB_INFO), 
                        pdb_encode_acct_ctrl (pdb_get_acct_ctrl(sampass), NEW_PW_FORMAT_SPACE_PADDED_LEN));
 
-       /* password lockout cache: 
+       /* password lockout cache:
           - If we are now autolocking or clearing, we write to ldap
           - If we are clearing, we delete the cache entry
           - If the count is > 0, we update the cache
@@ -1218,23 +1411,29 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
                if ((badcount >= pol) || (badcount == 0)) {
                        DEBUG(7, ("making mods to update ldap, count=%u, time=%u\n",
                                (unsigned int)badcount, (unsigned int)badtime));
-                       slprintf (temp, sizeof (temp) - 1, "%li", (long)badcount);
+                       if (asprintf(&temp, "%li", (long)badcount) < 0) {
+                               return false;
+                       }
                        smbldap_make_mod(
                                ldap_state->smbldap_state->ldap_struct,
-                               existing, mods, 
+                               existing, mods,
                                get_userattr_key2string(
-                                       ldap_state->schema_ver, 
+                                       ldap_state->schema_ver,
                                        LDAP_ATTR_BAD_PASSWORD_COUNT),
                                temp);
+                       SAFE_FREE(temp);
 
-                       slprintf (temp, sizeof (temp) - 1, "%li", badtime);
+                       if (asprintf(&temp, "%li", badtime) < 0) {
+                               return false;
+                       }
                        smbldap_make_mod(
-                               ldap_state->smbldap_state->ldap_struct, 
+                               ldap_state->smbldap_state->ldap_struct,
                                existing, mods,
                                get_userattr_key2string(
-                                       ldap_state->schema_ver, 
-                                       LDAP_ATTR_BAD_PASSWORD_TIME), 
+                                       ldap_state->schema_ver,
+                                       LDAP_ATTR_BAD_PASSWORD_TIME),
                                temp);
+                       SAFE_FREE(temp);
                }
                if (badcount == 0) {
                        DEBUG(7, ("bad password count is reset, deleting login cache entry for %s\n", pdb_get_nt_username(sampass)));
@@ -1255,60 +1454,6 @@ static BOOL init_ldap_from_sam (struct ldapsam_privates *ldap_state,
        return True;
 }
 
-/**********************************************************************
- Connect to LDAP server for password enumeration.
-*********************************************************************/
-
-static NTSTATUS ldapsam_setsampwent(struct pdb_methods *my_methods, BOOL update, uint32 acb_mask)
-{
-       struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
-       int rc;
-       pstring filter, suffix;
-       const char **attr_list;
-       BOOL machine_mask = False, user_mask = False;
-
-       pstr_sprintf( filter, "(&%s%s)", "(uid=%u)", 
-               get_objclass_filter(ldap_state->schema_ver));
-       all_string_sub(filter, "%u", "*", sizeof(pstring));
-
-       machine_mask    = ((acb_mask != 0) && (acb_mask & (ACB_WSTRUST|ACB_SVRTRUST|ACB_DOMTRUST)));
-       user_mask       = ((acb_mask != 0) && (acb_mask & ACB_NORMAL));
-
-       if (machine_mask) {
-               pstrcpy(suffix, lp_ldap_machine_suffix());
-       } else if (user_mask) {
-               pstrcpy(suffix, lp_ldap_user_suffix());
-       } else {
-               pstrcpy(suffix, lp_ldap_suffix());
-       }
-
-       DEBUG(10,("ldapsam_setsampwent: LDAP Query for acb_mask 0x%x will use suffix %s\n", 
-               acb_mask, suffix));
-
-       attr_list = get_userattr_list(NULL, ldap_state->schema_ver);
-       rc = smbldap_search(ldap_state->smbldap_state, suffix, LDAP_SCOPE_SUBTREE, filter, 
-                           attr_list, 0, &ldap_state->result);
-       TALLOC_FREE( attr_list );
-
-       if (rc != LDAP_SUCCESS) {
-               DEBUG(0, ("ldapsam_setsampwent: LDAP search failed: %s\n", ldap_err2string(rc)));
-               DEBUG(3, ("ldapsam_setsampwent: Query was: %s, %s\n", suffix, filter));
-               ldap_msgfree(ldap_state->result);
-               ldap_state->result = NULL;
-               return NT_STATUS_UNSUCCESSFUL;
-       }
-
-       DEBUG(2, ("ldapsam_setsampwent: %d entries in the base %s\n",
-               ldap_count_entries(ldap_state->smbldap_state->ldap_struct, 
-               ldap_state->result), suffix));
-
-       ldap_state->entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct,
-                                ldap_state->result);
-       ldap_state->index = 0;
-
-       return NT_STATUS_OK;
-}
-
 /**********************************************************************
  End enumeration of the LDAP password list.
 *********************************************************************/
@@ -1322,32 +1467,6 @@ static void ldapsam_endsampwent(struct pdb_methods *my_methods)
        }
 }
 
-/**********************************************************************
-Get the next entry in the LDAP password database.
-*********************************************************************/
-
-static NTSTATUS ldapsam_getsampwent(struct pdb_methods *my_methods,
-                                   struct samu *user)
-{
-       NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
-       struct ldapsam_privates *ldap_state =
-               (struct ldapsam_privates *)my_methods->private_data;
-       BOOL bret = False;
-
-       while (!bret) {
-               if (!ldap_state->entry)
-                       return ret;
-               
-               ldap_state->index++;
-               bret = init_sam_from_ldap(ldap_state, user, ldap_state->entry);
-               
-               ldap_state->entry = ldap_next_entry(priv2ld(ldap_state),
-                                                   ldap_state->entry); 
-       }
-
-       return NT_STATUS_OK;
-}
-
 static void append_attr(TALLOC_CTX *mem_ctx, const char ***attr_list,
                        const char *new_attr)
 {
@@ -1481,7 +1600,6 @@ static NTSTATUS ldapsam_getsampwsid(struct pdb_methods *my_methods, struct samu
        LDAPMessage *entry = NULL;
        int count;
        int rc;
-       fstring sid_string;
 
        rc = ldapsam_get_ldap_user_by_sid(ldap_state, 
                                          sid, &result); 
@@ -1491,13 +1609,14 @@ static NTSTATUS ldapsam_getsampwsid(struct pdb_methods *my_methods, struct samu
        count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
        
        if (count < 1) {
-               DEBUG(4, ("ldapsam_getsampwsid: Unable to locate SID [%s] count=%d\n", sid_to_string(sid_string, sid),
-                      count));
+               DEBUG(4, ("ldapsam_getsampwsid: Unable to locate SID [%s] "
+                         "count=%d\n", sid_string_dbg(sid), count));
                ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_USER;
        }  else if (count > 1) {
-               DEBUG(1, ("ldapsam_getsampwsid: More than one user with SID [%s]. Failing. count=%d\n", sid_to_string(sid_string, sid),
-                      count));
+               DEBUG(1, ("ldapsam_getsampwsid: More than one user with SID "
+                         "[%s]. Failing. count=%d\n", sid_string_dbg(sid),
+                         count));
                ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_USER;
        }
@@ -1528,7 +1647,7 @@ static NTSTATUS ldapsam_getsampwsid(struct pdb_methods *my_methods, struct samu
 static NTSTATUS ldapsam_modify_entry(struct pdb_methods *my_methods, 
                                     struct samu *newpwd, char *dn,
                                     LDAPMod **mods, int ldap_op, 
-                                    BOOL (*need_update)(const struct samu *, enum pdb_elements))
+                                    bool (*need_update)(const struct samu *, enum pdb_elements))
 {
        struct ldapsam_privates *ldap_state = (struct ldapsam_privates *)my_methods->private_data;
        int rc;
@@ -1650,6 +1769,10 @@ static NTSTATUS ldapsam_modify_entry(struct pdb_methods *my_methods,
                                pdb_get_username(newpwd), ldap_err2string(rc), ld_error?ld_error:"unknown"));
                        SAFE_FREE(ld_error);
                        ber_bvfree(bv);
+#if defined(LDAP_CONSTRAINT_VIOLATION)
+                       if (rc == LDAP_CONSTRAINT_VIOLATION)
+                               return NT_STATUS_PASSWORD_RESTRICTION;
+#endif
                        return NT_STATUS_UNSUCCESSFUL;
                } else {
                        DEBUG(3,("ldapsam_modify_entry: LDAP Password changed for user %s\n",pdb_get_username(newpwd)));
@@ -1732,7 +1855,7 @@ static NTSTATUS ldapsam_delete_sam_account(struct pdb_methods *my_methods,
  we need LDAP modification.
 *********************************************************************/
 
-static BOOL element_is_changed(const struct samu *sampass,
+static bool element_is_changed(const struct samu *sampass,
                               enum pdb_elements element)
 {
        return IS_SAM_CHANGED(sampass, element);
@@ -1790,8 +1913,9 @@ static NTSTATUS ldapsam_update_sam_account(struct pdb_methods *my_methods, struc
                        ldap_mods_free(mods,True);
                return NT_STATUS_UNSUCCESSFUL;
        }
-       
-       if (mods == NULL) {
+
+       if ((lp_ldap_passwd_sync() != LDAP_PASSWD_SYNC_ONLY)
+           && (mods == NULL)) {
                DEBUG(4,("ldapsam_update_sam_account: mods is empty: nothing to update for user: %s\n",
                         pdb_get_username(newpwd)));
                SAFE_FREE(dn);
@@ -1799,7 +1923,11 @@ static NTSTATUS ldapsam_update_sam_account(struct pdb_methods *my_methods, struc
        }
        
        ret = ldapsam_modify_entry(my_methods,newpwd,dn,mods,LDAP_MOD_REPLACE, element_is_changed);
-       ldap_mods_free(mods,True);
+
+       if (mods != NULL) {
+               ldap_mods_free(mods,True);
+       }
+
        SAFE_FREE(dn);
 
        /*
@@ -1830,12 +1958,12 @@ static NTSTATUS ldapsam_update_sam_account(struct pdb_methods *my_methods, struc
 ***************************************************************************/
 
 static NTSTATUS ldapsam_rename_sam_account(struct pdb_methods *my_methods,
-                                          struct samu *old_acct, 
+                                          struct samu *old_acct,
                                           const char *newname)
 {
        const char *oldname;
        int rc;
-       pstring rename_script;
+       char *rename_script = NULL;
        fstring oldname_lower, newname_lower;
 
        if (!old_acct) {
@@ -1846,16 +1974,21 @@ static NTSTATUS ldapsam_rename_sam_account(struct pdb_methods *my_methods,
                DEBUG(0, ("ldapsam_rename_sam_account: newname was NULL!\n"));
                return NT_STATUS_INVALID_PARAMETER;
        }
-               
+
        oldname = pdb_get_username(old_acct);
 
-        /* rename the posix user */
-        pstrcpy(rename_script, lp_renameuser_script());
+       /* rename the posix user */
+       rename_script = SMB_STRDUP(lp_renameuser_script());
+       if (rename_script == NULL) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
-       if (!(*rename_script))
+       if (!(*rename_script)) {
+               SAFE_FREE(rename_script);
                return NT_STATUS_ACCESS_DENIED;
+       }
 
-       DEBUG (3, ("ldapsam_rename_sam_account: Renaming user %s to %s.\n", 
+       DEBUG (3, ("ldapsam_rename_sam_account: Renaming user %s to %s.\n",
                   oldname, newname));
 
        /* We have to allow the account name to end with a '$'.
@@ -1866,15 +1999,26 @@ static NTSTATUS ldapsam_rename_sam_account(struct pdb_methods *my_methods,
        strlower_m( oldname_lower );
        fstrcpy( newname_lower, newname );
        strlower_m( newname_lower );
-       string_sub2(rename_script, "%unew", newname_lower, sizeof(pstring), 
-                   True, False, True);
-       string_sub2(rename_script, "%uold", oldname_lower, sizeof(pstring), 
-                   True, False, True);
+       rename_script = realloc_string_sub2(rename_script,
+                                       "%unew",
+                                       newname_lower,
+                                       true,
+                                       true);
+       if (rename_script) {
+               return NT_STATUS_NO_MEMORY;
+       }
+       rename_script = realloc_string_sub2(rename_script,
+                                       "%uold",
+                                       oldname_lower,
+                                       true,
+                                       true);
        rc = smbrun(rename_script, NULL);
 
-       DEBUG(rc ? 0 : 3,("Running the command `%s' gave %d\n", 
+       DEBUG(rc ? 0 : 3,("Running the command `%s' gave %d\n",
                          rename_script, rc));
 
+       SAFE_FREE(rename_script);
+
        if (rc == 0) {
                smb_nscd_flush_user_cache();
        }
@@ -1890,7 +2034,7 @@ static NTSTATUS ldapsam_rename_sam_account(struct pdb_methods *my_methods,
  we need LDAP modification.
  *********************************************************************/
 
-static BOOL element_is_set_or_changed(const struct samu *sampass,
+static bool element_is_set_or_changed(const struct samu *sampass,
                                      enum pdb_elements element)
 {
        return (IS_SAM_SET(sampass, element) ||
@@ -1908,148 +2052,161 @@ static NTSTATUS ldapsam_add_sam_account(struct pdb_methods *my_methods, struct s
        int rc;
        LDAPMessage     *result = NULL;
        LDAPMessage     *entry  = NULL;
-       pstring         dn;
        LDAPMod         **mods = NULL;
        int             ldap_op = LDAP_MOD_REPLACE;
        uint32          num_result;
        const char      **attr_list;
-       char            *escape_user;
+       char *escape_user = NULL;
        const char      *username = pdb_get_username(newpwd);
        const DOM_SID   *sid = pdb_get_user_sid(newpwd);
-       pstring         filter;
-       fstring         sid_string;
+       char *filter = NULL;
+       char *dn = NULL;
+       NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
+       TALLOC_CTX *ctx = talloc_init("ldapsam_add_sam_account");
+
+       if (!ctx) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
        if (!username || !*username) {
                DEBUG(0, ("ldapsam_add_sam_account: Cannot add user without a username!\n"));
-               return NT_STATUS_INVALID_PARAMETER;
+               status = NT_STATUS_INVALID_PARAMETER;
+               goto fn_exit;
        }
 
        /* free this list after the second search or in case we exit on failure */
-       attr_list = get_userattr_list(NULL, ldap_state->schema_ver);
+       attr_list = get_userattr_list(ctx, ldap_state->schema_ver);
 
        rc = ldapsam_search_suffix_by_name (ldap_state, username, &result, attr_list);
 
        if (rc != LDAP_SUCCESS) {
-               TALLOC_FREE( attr_list );
-               return NT_STATUS_UNSUCCESSFUL;
+               goto fn_exit;
        }
 
        if (ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result) != 0) {
                DEBUG(0,("ldapsam_add_sam_account: User '%s' already in the base, with samba attributes\n", 
                         username));
-               ldap_msgfree(result);
-               TALLOC_FREE( attr_list );
-               return NT_STATUS_UNSUCCESSFUL;
+               goto fn_exit;
        }
        ldap_msgfree(result);
        result = NULL;
 
        if (element_is_set_or_changed(newpwd, PDB_USERSID)) {
-               rc = ldapsam_get_ldap_user_by_sid(ldap_state, 
-                                                 sid, &result); 
+               rc = ldapsam_get_ldap_user_by_sid(ldap_state,
+                                                 sid, &result);
                if (rc == LDAP_SUCCESS) {
                        if (ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result) != 0) {
-                               DEBUG(0,("ldapsam_add_sam_account: SID '%s' already in the base, with samba attributes\n", 
-                                        sid_to_string(sid_string, sid)));
-                               TALLOC_FREE( attr_list );
-                               ldap_msgfree(result);
-                               return NT_STATUS_UNSUCCESSFUL;
+                               DEBUG(0,("ldapsam_add_sam_account: SID '%s' "
+                                        "already in the base, with samba "
+                                        "attributes\n", sid_string_dbg(sid)));
+                               goto fn_exit;
                        }
                        ldap_msgfree(result);
+                       result = NULL;
                }
        }
 
        /* does the entry already exist but without a samba attributes?
           we need to return the samba attributes here */
-          
+
        escape_user = escape_ldap_string_alloc( username );
-       pstrcpy( filter, "(uid=%u)" );
-       all_string_sub( filter, "%u", escape_user, sizeof(filter) );
-       SAFE_FREE( escape_user );
+       filter = talloc_strdup(attr_list, "(uid=%u)");
+       if (!filter) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fn_exit;
+       }
+       filter = talloc_all_string_sub(attr_list, filter, "%u", escape_user);
+       if (!filter) {
+               status = NT_STATUS_NO_MEMORY;
+               goto fn_exit;
+       }
+       SAFE_FREE(escape_user);
 
-       rc = smbldap_search_suffix(ldap_state->smbldap_state, 
+       rc = smbldap_search_suffix(ldap_state->smbldap_state,
                                   filter, attr_list, &result);
        if ( rc != LDAP_SUCCESS ) {
-               TALLOC_FREE( attr_list );
-               return NT_STATUS_UNSUCCESSFUL;
+               goto fn_exit;
        }
 
        num_result = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
-       
+
        if (num_result > 1) {
                DEBUG (0, ("ldapsam_add_sam_account: More than one user with that uid exists: bailing out!\n"));
-               TALLOC_FREE( attr_list );
-               ldap_msgfree(result);
-               return NT_STATUS_UNSUCCESSFUL;
+               goto fn_exit;
        }
-       
+
        /* Check if we need to update an existing entry */
        if (num_result == 1) {
                char *tmp;
-               
+
                DEBUG(3,("ldapsam_add_sam_account: User exists without samba attributes: adding them\n"));
                ldap_op = LDAP_MOD_REPLACE;
                entry = ldap_first_entry (ldap_state->smbldap_state->ldap_struct, result);
-               tmp = smbldap_get_dn (ldap_state->smbldap_state->ldap_struct, entry);
+               tmp = smbldap_get_dn(ldap_state->smbldap_state->ldap_struct, entry);
                if (!tmp) {
-                       TALLOC_FREE( attr_list );
-                       ldap_msgfree(result);
-                       return NT_STATUS_UNSUCCESSFUL;
+                       goto fn_exit;
                }
-               slprintf (dn, sizeof (dn) - 1, "%s", tmp);
+               dn = talloc_asprintf(ctx, "%s", tmp);
                SAFE_FREE(tmp);
+               if (!dn) {
+                       status = NT_STATUS_NO_MEMORY;
+                       goto fn_exit;
+               }
 
        } else if (ldap_state->schema_ver == SCHEMAVER_SAMBASAMACCOUNT) {
 
                /* There might be a SID for this account already - say an idmap entry */
 
-               pstr_sprintf(filter, "(&(%s=%s)(|(objectClass=%s)(objectClass=%s)))", 
-                        get_userattr_key2string(ldap_state->schema_ver, LDAP_ATTR_USER_SID),
-                        sid_to_string(sid_string, sid),
-                        LDAP_OBJ_IDMAP_ENTRY,
-                        LDAP_OBJ_SID_ENTRY);
-               
+               filter = talloc_asprintf(ctx,
+                               "(&(%s=%s)(|(objectClass=%s)(objectClass=%s)))",
+                                get_userattr_key2string(ldap_state->schema_ver,
+                                        LDAP_ATTR_USER_SID),
+                                sid_string_talloc(ctx, sid),
+                                LDAP_OBJ_IDMAP_ENTRY,
+                                LDAP_OBJ_SID_ENTRY);
+               if (!filter) {
+                       status = NT_STATUS_NO_MEMORY;
+                       goto fn_exit;
+               }
+
                /* free old result before doing a new search */
                if (result != NULL) {
                        ldap_msgfree(result);
                        result = NULL;
                }
-               rc = smbldap_search_suffix(ldap_state->smbldap_state, 
+               rc = smbldap_search_suffix(ldap_state->smbldap_state,
                                           filter, attr_list, &result);
-                       
+
                if ( rc != LDAP_SUCCESS ) {
-                       TALLOC_FREE( attr_list );
-                       return NT_STATUS_UNSUCCESSFUL;
+                       goto fn_exit;
                }
-               
+
                num_result = ldap_count_entries(ldap_state->smbldap_state->ldap_struct, result);
-               
+
                if (num_result > 1) {
                        DEBUG (0, ("ldapsam_add_sam_account: More than one user with specified Sid exists: bailing out!\n"));
-                       TALLOC_FREE( attr_list );
-                       ldap_msgfree(result);
-                       return NT_STATUS_UNSUCCESSFUL;
+                       goto fn_exit;
                }
-               
+
                /* Check if we need to update an existing entry */
                if (num_result == 1) {
                        char *tmp;
-                       
+
                        DEBUG(3,("ldapsam_add_sam_account: User exists without samba attributes: adding them\n"));
                        ldap_op = LDAP_MOD_REPLACE;
                        entry = ldap_first_entry (ldap_state->smbldap_state->ldap_struct, result);
                        tmp = smbldap_get_dn (ldap_state->smbldap_state->ldap_struct, entry);
                        if (!tmp) {
-                               TALLOC_FREE( attr_list );
-                               ldap_msgfree(result);
-                               return NT_STATUS_UNSUCCESSFUL;
+                               goto fn_exit;
                        }
-                       slprintf (dn, sizeof (dn) - 1, "%s", tmp);
+                       dn = talloc_asprintf(ctx, "%s", tmp);
                        SAFE_FREE(tmp);
+                       if (!dn) {
+                               status = NT_STATUS_NO_MEMORY;
+                               goto fn_exit;
+                       }
                }
        }
-       
-       TALLOC_FREE( attr_list );
 
        if (num_result == 0) {
                char *escape_username;
@@ -2059,34 +2216,41 @@ static NTSTATUS ldapsam_add_sam_account(struct pdb_methods *my_methods, struct s
 
                escape_username = escape_rdn_val_string_alloc(username);
                if (!escape_username) {
-                       DEBUG(0, ("Out of memory!\n"));
-                       ldap_msgfree(result);
-                       return NT_STATUS_NO_MEMORY;
+                       status = NT_STATUS_NO_MEMORY;
+                       goto fn_exit;
                }
 
                if (username[strlen(username)-1] == '$') {
-                       slprintf (dn, sizeof (dn) - 1, "uid=%s,%s", escape_username, lp_ldap_machine_suffix ());
+                       dn = talloc_asprintf(ctx,
+                                       "uid=%s,%s",
+                                       escape_username,
+                                       lp_ldap_machine_suffix());
                } else {
-                       slprintf (dn, sizeof (dn) - 1, "uid=%s,%s", escape_username, lp_ldap_user_suffix ());
+                       dn = talloc_asprintf(ctx,
+                                       "uid=%s,%s",
+                                       escape_username,
+                                       lp_ldap_user_suffix());
                }
 
                SAFE_FREE(escape_username);
+               if (!dn) {
+                       status = NT_STATUS_NO_MEMORY;
+                       goto fn_exit;
+               }
        }
 
        if (!init_ldap_from_sam(ldap_state, entry, &mods, newpwd,
                                element_is_set_or_changed)) {
                DEBUG(0, ("ldapsam_add_sam_account: init_ldap_from_sam failed!\n"));
-               ldap_msgfree(result);
-               if (mods != NULL)
-                       ldap_mods_free(mods,True);
-               return NT_STATUS_UNSUCCESSFUL;          
+               if (mods != NULL) {
+                       ldap_mods_free(mods, true);
+               }
+               goto fn_exit;
        }
-       
-       ldap_msgfree(result);
 
        if (mods == NULL) {
                DEBUG(0,("ldapsam_add_sam_account: mods is empty: nothing to add for user: %s\n",pdb_get_username(newpwd)));
-               return NT_STATUS_UNSUCCESSFUL;
+               goto fn_exit;
        }
        switch ( ldap_state->schema_ver ) {
                case SCHEMAVER_SAMBAACCOUNT:
@@ -2104,14 +2268,23 @@ static NTSTATUS ldapsam_add_sam_account(struct pdb_methods *my_methods, struct s
        if (!NT_STATUS_IS_OK(ret)) {
                DEBUG(0,("ldapsam_add_sam_account: failed to modify/add user with uid = %s (dn = %s)\n",
                         pdb_get_username(newpwd),dn));
-               ldap_mods_free(mods, True);
-               return ret;
+               ldap_mods_free(mods, true);
+               goto fn_exit;
        }
 
        DEBUG(2,("ldapsam_add_sam_account: added: uid == %s in the LDAP database\n", pdb_get_username(newpwd)));
-       ldap_mods_free(mods, True);
-       
-       return NT_STATUS_OK;
+       ldap_mods_free(mods, true);
+
+       status = NT_STATUS_OK;
+
+  fn_exit:
+
+       TALLOC_FREE(ctx);
+       SAFE_FREE(escape_user);
+       if (result) {
+               ldap_msgfree(result);
+       }
+       return status;
 }
 
 /**********************************************************************
@@ -2126,7 +2299,7 @@ static int ldapsam_search_one_group (struct ldapsam_privates *ldap_state,
        const char **attr_list;
 
        attr_list = get_attr_list(NULL, groupmap_attr_list);
-       rc = smbldap_search(ldap_state->smbldap_state, 
+       rc = smbldap_search(ldap_state->smbldap_state,
                            lp_ldap_group_suffix (), scope,
                            filter, attr_list, 0, result);
        TALLOC_FREE(attr_list);
@@ -2137,77 +2310,122 @@ static int ldapsam_search_one_group (struct ldapsam_privates *ldap_state,
 /**********************************************************************
  *********************************************************************/
 
-static BOOL init_group_from_ldap(struct ldapsam_privates *ldap_state,
+static bool init_group_from_ldap(struct ldapsam_privates *ldap_state,
                                 GROUP_MAP *map, LDAPMessage *entry)
 {
-       pstring temp;
+       char *temp = NULL;
+       TALLOC_CTX *ctx = talloc_init("init_group_from_ldap");
 
        if (ldap_state == NULL || map == NULL || entry == NULL ||
                        ldap_state->smbldap_state->ldap_struct == NULL) {
                DEBUG(0, ("init_group_from_ldap: NULL parameters found!\n"));
-               return False;
+               TALLOC_FREE(ctx);
+               return false;
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GIDNUMBER), temp)) {
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_attr_key2string(groupmap_attr_list,
+                               LDAP_ATTR_GIDNUMBER),
+                       ctx);
+       if (!temp) {
                DEBUG(0, ("init_group_from_ldap: Mandatory attribute %s not found\n", 
                        get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GIDNUMBER)));
-               return False;
+               TALLOC_FREE(ctx);
+               return false;
        }
        DEBUG(2, ("init_group_from_ldap: Entry found for group: %s\n", temp));
 
        map->gid = (gid_t)atol(temp);
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GROUP_SID), temp)) {
+       TALLOC_FREE(temp);
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_attr_key2string(groupmap_attr_list,
+                               LDAP_ATTR_GROUP_SID),
+                       ctx);
+       if (!temp) {
                DEBUG(0, ("init_group_from_ldap: Mandatory attribute %s not found\n",
                        get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GROUP_SID)));
-               return False;
+               TALLOC_FREE(ctx);
+               return false;
        }
-       
+
        if (!string_to_sid(&map->sid, temp)) {
                DEBUG(1, ("SID string [%s] could not be read as a valid SID\n", temp));
-               return False;
+               TALLOC_FREE(ctx);
+               return false;
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GROUP_TYPE), temp)) {
+       TALLOC_FREE(temp);
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_attr_key2string(groupmap_attr_list,
+                               LDAP_ATTR_GROUP_TYPE),
+                       ctx);
+       if (!temp) {
                DEBUG(0, ("init_group_from_ldap: Mandatory attribute %s not found\n",
                        get_attr_key2string( groupmap_attr_list, LDAP_ATTR_GROUP_TYPE)));
-               return False;
+               TALLOC_FREE(ctx);
+               return false;
        }
        map->sid_name_use = (enum lsa_SidType)atol(temp);
 
        if ((map->sid_name_use < SID_NAME_USER) ||
                        (map->sid_name_use > SID_NAME_UNKNOWN)) {
                DEBUG(0, ("init_group_from_ldap: Unknown Group type: %d\n", map->sid_name_use));
-               return False;
+               TALLOC_FREE(ctx);
+               return false;
        }
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_DISPLAY_NAME), temp)) {
-               temp[0] = '\0';
-               if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_CN), temp)) 
-               {
+       TALLOC_FREE(temp);
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_attr_key2string(groupmap_attr_list,
+                               LDAP_ATTR_DISPLAY_NAME),
+                       ctx);
+       if (!temp) {
+               temp = smbldap_talloc_single_attribute(
+                               ldap_state->smbldap_state->ldap_struct,
+                               entry,
+                               get_attr_key2string(groupmap_attr_list,
+                                       LDAP_ATTR_CN),
+                               ctx);
+               if (!temp) {
                        DEBUG(0, ("init_group_from_ldap: Attributes cn not found either \
 for gidNumber(%lu)\n",(unsigned long)map->gid));
-                       return False;
+                       TALLOC_FREE(ctx);
+                       return false;
                }
        }
        fstrcpy(map->nt_name, temp);
 
-       if (!smbldap_get_single_pstring(ldap_state->smbldap_state->ldap_struct, entry, 
-                       get_attr_key2string( groupmap_attr_list, LDAP_ATTR_DESC), temp)) {
-               temp[0] = '\0';
+       TALLOC_FREE(temp);
+       temp = smbldap_talloc_single_attribute(
+                       ldap_state->smbldap_state->ldap_struct,
+                       entry,
+                       get_attr_key2string(groupmap_attr_list,
+                               LDAP_ATTR_DESC),
+                       ctx);
+       if (!temp) {
+               temp = talloc_strdup(ctx, "");
+               if (!temp) {
+                       TALLOC_FREE(ctx);
+                       return false;
+               }
        }
        fstrcpy(map->comment, temp);
 
-       if (lp_parm_bool(-1, "ldapsam", "trusted", False)) {
+       if (lp_parm_bool(-1, "ldapsam", "trusted", false)) {
                store_gid_sid_cache(&map->sid, map->gid);
        }
 
-       return True;
+       TALLOC_FREE(ctx);
+       return true;
 }
 
 /**********************************************************************
@@ -2231,7 +2449,8 @@ static NTSTATUS ldapsam_getgroup(struct pdb_methods *methods,
        count = ldap_count_entries(priv2ld(ldap_state), result);
 
        if (count < 1) {
-               DEBUG(4, ("ldapsam_getgroup: Did not find group\n"));
+               DEBUG(4, ("ldapsam_getgroup: Did not find group, filter was "
+                         "%s\n", filter));
                ldap_msgfree(result);
                return NT_STATUS_NO_SUCH_GROUP;
        }
@@ -2267,14 +2486,20 @@ static NTSTATUS ldapsam_getgroup(struct pdb_methods *methods,
 static NTSTATUS ldapsam_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
                                 DOM_SID sid)
 {
-       pstring filter;
+       char *filter = NULL;
+       NTSTATUS status;
+       fstring tmp;
 
-       pstr_sprintf(filter, "(&(objectClass=%s)(%s=%s))",
-               LDAP_OBJ_GROUPMAP, 
+       if (asprintf(&filter, "(&(objectClass=%s)(%s=%s))",
+               LDAP_OBJ_GROUPMAP,
                get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GROUP_SID),
-               sid_string_static(&sid));
+               sid_to_fstring(tmp, &sid)) < 0) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
-       return ldapsam_getgroup(methods, filter, map);
+       status = ldapsam_getgroup(methods, filter, map);
+       SAFE_FREE(filter);
+       return status;
 }
 
 /**********************************************************************
@@ -2283,14 +2508,19 @@ static NTSTATUS ldapsam_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
 static NTSTATUS ldapsam_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
                                 gid_t gid)
 {
-       pstring filter;
+       char *filter = NULL;
+       NTSTATUS status;
 
-       pstr_sprintf(filter, "(&(objectClass=%s)(%s=%lu))",
+       if (asprintf(&filter, "(&(objectClass=%s)(%s=%lu))",
                LDAP_OBJ_GROUPMAP,
                get_attr_key2string(groupmap_attr_list, LDAP_ATTR_GIDNUMBER),
-               (unsigned long)gid);
+               (unsigned long)gid) < 0) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
-       return ldapsam_getgroup(methods, filter, map);
+       status = ldapsam_getgroup(methods, filter, map);
+       SAFE_FREE(filter);
+       return status;
 }
 
 /**********************************************************************
@@ -2299,24 +2529,30 @@ static NTSTATUS ldapsam_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
 static NTSTATUS ldapsam_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
                                 const char *name)
 {
-       pstring filter;
+       char *filter = NULL;
        char *escape_name = escape_ldap_string_alloc(name);
+       NTSTATUS status;
 
        if (!escape_name) {
                return NT_STATUS_NO_MEMORY;
        }
 
-       pstr_sprintf(filter, "(&(objectClass=%s)(|(%s=%s)(%s=%s)))",
+       if (asprintf(&filter, "(&(objectClass=%s)(|(%s=%s)(%s=%s)))",
                LDAP_OBJ_GROUPMAP,
                get_attr_key2string(groupmap_attr_list, LDAP_ATTR_DISPLAY_NAME), escape_name,
-               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_CN), escape_name);
+               get_attr_key2string(groupmap_attr_list, LDAP_ATTR_CN),
+               escape_name) < 0) {
+               SAFE_FREE(escape_name);
+               return NT_STATUS_NO_MEMORY;
+       }
 
        SAFE_FREE(escape_name);
-
-       return ldapsam_getgroup(methods, filter, map);
+       status = ldapsam_getgroup(methods, filter, map);
+       SAFE_FREE(filter);
+       return status;
 }
 
-static BOOL ldapsam_extract_rid_from_entry(LDAP *ldap_struct,
+static bool ldapsam_extract_rid_from_entry(LDAP *ldap_struct,
                                           LDAPMessage *entry,
                                           const DOM_SID *domain_sid,
                                           uint32 *rid)
@@ -2337,7 +2573,7 @@ static BOOL ldapsam_extract_rid_from_entry(LDAP *ldap_struct,
 
        if (sid_compare_domain(&sid, domain_sid) != 0) {
                DEBUG(10, ("SID %s is not in expected domain %s\n",
-                          str, sid_string_static(domain_sid)));
+                          str, sid_string_dbg(domain_sid)));
                return False;
        }
 
@@ -2378,7 +2614,7 @@ static NTSTATUS ldapsam_enum_group_members(struct pdb_methods *methods,
                                 "(sambaSID=%s))",
                                 LDAP_OBJ_POSIXGROUP,
                                 LDAP_OBJ_GROUPMAP,
-                                sid_string_static(group));
+                                sid_string_talloc(mem_ctx, group));
        if (filter == NULL) {
                ret = NT_STATUS_NO_MEMORY;
                goto done;
@@ -2397,7 +2633,7 @@ static NTSTATUS ldapsam_enum_group_members(struct pdb_methods *methods,
 
        if (count > 1) {
                DEBUG(1, ("Found more than one groupmap entry for %s\n",
-                         sid_string_static(group)));
+                         sid_string_dbg(group)));
                ret = NT_STATUS_INTERNAL_DB_CORRUPTION;
                goto done;
        }
@@ -2453,7 +2689,7 @@ static NTSTATUS ldapsam_enum_group_members(struct pdb_methods *methods,
                        goto done;
                }
 
-               rc = smbldap_search(conn, lp_ldap_user_suffix(),
+               rc = smbldap_search(conn, lp_ldap_suffix(),
                                    LDAP_SCOPE_SUBTREE, filter, sid_attrs, 0,
                                    &result);
 
@@ -2509,7 +2745,7 @@ static NTSTATUS ldapsam_enum_group_members(struct pdb_methods *methods,
                                 LDAP_OBJ_SAMBASAMACCOUNT,
                                 gidstr);
 
-       rc = smbldap_search(conn, lp_ldap_user_suffix(),
+       rc = smbldap_search(conn, lp_ldap_suffix(),
                            LDAP_SCOPE_SUBTREE, filter, sid_attrs, 0,
                            &result);
 
@@ -2593,7 +2829,7 @@ static NTSTATUS ldapsam_enum_group_memberships(struct pdb_methods *methods,
                goto done;
        }
 
-       rc = smbldap_search(conn, lp_ldap_user_suffix(),
+       rc = smbldap_search(conn, lp_ldap_suffix(),
                            LDAP_SCOPE_SUBTREE, filter, attrs, 0, &result);
 
        if (rc != LDAP_SUCCESS)
@@ -2656,8 +2892,9 @@ static NTSTATUS ldapsam_enum_group_memberships(struct pdb_methods *methods,
 
        /* This sid will be replaced later */
 
-       if (!add_sid_to_array_unique(mem_ctx, &global_sid_NULL, pp_sids, &num_sids)) {
-               ret = NT_STATUS_NO_MEMORY;
+       ret = add_sid_to_array_unique(mem_ctx, &global_sid_NULL, pp_sids,
+                                     &num_sids);
+       if (!NT_STATUS_IS_OK(ret)) {
                goto done;
        }
 
@@ -2696,9 +2933,9 @@ static NTSTATUS ldapsam_enum_group_memberships(struct pdb_methods *methods,
                                ret = NT_STATUS_NO_MEMORY;
                                goto done;
                        }
-                       if (!add_sid_to_array_unique(mem_ctx, &sid, pp_sids,
-                                               &num_sids)) {
-                               ret = NT_STATUS_NO_MEMORY;
+                       ret = add_sid_to_array_unique(mem_ctx, &sid, pp_sids,
+                                                     &num_sids);
+                       if (!NT_STATUS_IS_OK(ret)) {
                                goto done;
                        }
                }
@@ -2760,7 +2997,7 @@ static NTSTATUS ldapsam_map_posixgroup(TALLOC_CTX *mem_ctx,
        smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectClass",
                        "sambaGroupMapping");
        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, entry, &mods, "sambaSid",
-                        sid_string_static(&map->sid));
+                        sid_string_talloc(mem_ctx, &map->sid));
        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, entry, &mods, "sambaGroupType",
                         talloc_asprintf(mem_ctx, "%d", map->sid_name_use));
        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, entry, &mods, "displayName",
@@ -2802,7 +3039,7 @@ static NTSTATUS ldapsam_add_group_mapping_entry(struct pdb_methods *methods,
        }
 
        filter = talloc_asprintf(mem_ctx, "(sambaSid=%s)",
-                                sid_string_static(&map->sid));
+                                sid_string_talloc(mem_ctx, &map->sid));
        if (filter == NULL) {
                result = NT_STATUS_NO_MEMORY;
                goto done;
@@ -2816,8 +3053,7 @@ static NTSTATUS ldapsam_add_group_mapping_entry(struct pdb_methods *methods,
            (ldap_count_entries(ldap_state->smbldap_state->ldap_struct, msg) > 0)) {
 
                DEBUG(3, ("SID %s already present in LDAP, refusing to add "
-                         "group mapping entry\n",
-                         sid_string_static(&map->sid)));
+                         "group mapping entry\n", sid_string_dbg(&map->sid)));
                result = NT_STATUS_GROUP_EXISTS;
                goto done;
        }
@@ -2836,7 +3072,7 @@ static NTSTATUS ldapsam_add_group_mapping_entry(struct pdb_methods *methods,
                        && !sid_check_is_in_builtin(&map->sid) ) 
                {
                        DEBUG(3, ("Refusing to map sid %s as an alias, not in our domain\n",
-                                 sid_string_static(&map->sid)));
+                                 sid_string_dbg(&map->sid)));
                        result = NT_STATUS_INVALID_PARAMETER;
                        goto done;
                }
@@ -2860,7 +3096,7 @@ static NTSTATUS ldapsam_add_group_mapping_entry(struct pdb_methods *methods,
 
        if (pdb_gid_to_sid(map->gid, &sid)) {
                DEBUG(3, ("Gid %d is already mapped to SID %s, refusing to "
-                         "add\n", map->gid, sid_string_static(&sid)));
+                         "add\n", map->gid, sid_string_dbg(&sid)));
                result = NT_STATUS_GROUP_EXISTS;
                goto done;
        }
@@ -2869,7 +3105,7 @@ static NTSTATUS ldapsam_add_group_mapping_entry(struct pdb_methods *methods,
         * the best we can get out of LDAP. */
 
        dn = talloc_asprintf(mem_ctx, "sambaSid=%s,%s",
-                            sid_string_static(&map->sid),
+                            sid_string_talloc(mem_ctx, &map->sid),
                             lp_ldap_group_suffix());
        if (dn == NULL) {
                result = NT_STATUS_NO_MEMORY;
@@ -2884,7 +3120,7 @@ static NTSTATUS ldapsam_add_group_mapping_entry(struct pdb_methods *methods,
                         "sambaGroupMapping");
 
        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, NULL, &mods, "sambaSid",
-                        sid_string_static(&map->sid));
+                        sid_string_talloc(mem_ctx, &map->sid));
        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, NULL, &mods, "sambaGroupType",
                         talloc_asprintf(mem_ctx, "%d", map->sid_name_use));
        smbldap_make_mod(ldap_state->smbldap_state->ldap_struct, NULL, &mods, "displayName",
@@ -2937,8 +3173,8 @@ static NTSTATUS ldapsam_update_group_mapping_entry(struct pdb_methods *methods,
                                 "(sambaSid=%s)(gidNumber=%u)"
                                 "(sambaGroupType=%d))",
                                 LDAP_OBJ_GROUPMAP,
-                                sid_string_static(&map->sid), map->gid,
-                                map->sid_name_use);
+                                sid_string_talloc(mem_ctx, &map->sid),
+                                map->gid, map->sid_name_use);
        if (filter == NULL) {
                result = NT_STATUS_NO_MEMORY;
                goto done;
@@ -3016,7 +3252,7 @@ static NTSTATUS ldapsam_delete_group_mapping_entry(struct pdb_methods *methods,
 
        filter = talloc_asprintf(mem_ctx, "(&(objectClass=%s)(%s=%s))",
                                 LDAP_OBJ_GROUPMAP, LDAP_ATTRIBUTE_SID,
-                                sid_string_static(&sid));
+                                sid_string_talloc(mem_ctx, &sid));
        if (filter == NULL) {
                result = NT_STATUS_NO_MEMORY;
                goto done;
@@ -3077,15 +3313,18 @@ static NTSTATUS ldapsam_delete_group_mapping_entry(struct pdb_methods *methods,
  *********************************************************************/
 
 static NTSTATUS ldapsam_setsamgrent(struct pdb_methods *my_methods,
-                                   BOOL update)
+                                   bool update)
 {
        struct ldapsam_privates *ldap_state =
                (struct ldapsam_privates *)my_methods->private_data;
-       fstring filter;
+       char *filter = NULL;
        int rc;
        const char **attr_list;
 
-       pstr_sprintf( filter, "(objectclass=%s)", LDAP_OBJ_GROUPMAP);
+       filter = talloc_asprintf(NULL, "(objectclass=%s)", LDAP_OBJ_GROUPMAP);
+       if (!filter) {
+               return NT_STATUS_NO_MEMORY;
+       }
        attr_list = get_attr_list( NULL, groupmap_attr_list );
        rc = smbldap_search(ldap_state->smbldap_state, lp_ldap_group_suffix(),
                            LDAP_SCOPE_SUBTREE, filter,
@@ -3099,9 +3338,12 @@ static NTSTATUS ldapsam_setsamgrent(struct pdb_methods *my_methods,
                          lp_ldap_group_suffix(), filter));
                ldap_msgfree(ldap_state->result);
                ldap_state->result = NULL;
+               TALLOC_FREE(filter);
                return NT_STATUS_UNSUCCESSFUL;
        }
 
+       TALLOC_FREE(filter);
+
        DEBUG(2, ("ldapsam_setsamgrent: %d entries in the base!\n",
                  ldap_count_entries(ldap_state->smbldap_state->ldap_struct,
                                     ldap_state->result)));
@@ -3131,7 +3373,7 @@ static NTSTATUS ldapsam_getsamgrent(struct pdb_methods *my_methods,
        NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
        struct ldapsam_privates *ldap_state =
                (struct ldapsam_privates *)my_methods->private_data;
-       BOOL bret = False;
+       bool bret = False;
 
        while (!bret) {
                if (!ldap_state->entry)
@@ -3156,7 +3398,7 @@ static NTSTATUS ldapsam_enum_group_mapping(struct pdb_methods *methods,
                                           const DOM_SID *domsid, enum lsa_SidType sid_name_use,
                                           GROUP_MAP **pp_rmap,
                                           size_t *p_num_entries,
-                                          BOOL unix_only)
+                                          bool unix_only)
 {
        GROUP_MAP map;
        size_t entries = 0;
@@ -3209,15 +3451,16 @@ static NTSTATUS ldapsam_modify_aliasmem(struct pdb_methods *methods,
 {
        struct ldapsam_privates *ldap_state =
                (struct ldapsam_privates *)methods->private_data;
-       char *dn;
+       char *dn = NULL;
        LDAPMessage *result = NULL;
        LDAPMessage *entry = NULL;
        int count;
        LDAPMod **mods = NULL;
        int rc;
        enum lsa_SidType type = SID_NAME_USE_NONE;
+       fstring tmp;
 
-       pstring filter;
+       char *filter = NULL;
 
        if (sid_check_is_in_builtin(alias)) {
                type = SID_NAME_ALIAS;
@@ -3229,18 +3472,22 @@ static NTSTATUS ldapsam_modify_aliasmem(struct pdb_methods *methods,
 
        if (type == SID_NAME_USE_NONE) {
                DEBUG(5, ("SID %s is neither in builtin nor in our domain!\n",
-                         sid_string_static(alias)));
+                         sid_string_dbg(alias)));
                return NT_STATUS_NO_SUCH_ALIAS;
        }
 
-       pstr_sprintf(filter,
+       if (asprintf(&filter,
                     "(&(objectClass=%s)(sambaSid=%s)(sambaGroupType=%d))",
-                    LDAP_OBJ_GROUPMAP, sid_string_static(alias),
-                    type);
+                    LDAP_OBJ_GROUPMAP, sid_to_fstring(tmp, alias),
+                    type) < 0) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
        if (ldapsam_search_one_group(ldap_state, filter,
-                                    &result) != LDAP_SUCCESS)
+                                    &result) != LDAP_SUCCESS) {
+               SAFE_FREE(filter);
                return NT_STATUS_NO_SUCH_ALIAS;
+       }
 
        count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct,
                                   result);
@@ -3248,6 +3495,7 @@ static NTSTATUS ldapsam_modify_aliasmem(struct pdb_methods *methods,
        if (count < 1) {
                DEBUG(4, ("ldapsam_modify_aliasmem: Did not find alias\n"));
                ldap_msgfree(result);
+               SAFE_FREE(filter);
                return NT_STATUS_NO_SUCH_ALIAS;
        }
 
@@ -3255,9 +3503,12 @@ static NTSTATUS ldapsam_modify_aliasmem(struct pdb_methods *methods,
                DEBUG(1, ("ldapsam_modify_aliasmem: Duplicate entries for "
                          "filter %s: count=%d\n", filter, count));
                ldap_msgfree(result);
+               SAFE_FREE(filter);
                return NT_STATUS_NO_SUCH_ALIAS;
        }
 
+       SAFE_FREE(filter);
+
        entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct,
                                 result);
 
@@ -3275,7 +3526,7 @@ static NTSTATUS ldapsam_modify_aliasmem(struct pdb_methods *methods,
        smbldap_set_mod(&mods, modop,
                        get_attr_key2string(groupmap_attr_list,
                                            LDAP_ATTR_SID_LIST),
-                       sid_string_static(member));
+                       sid_to_fstring(tmp, member));
 
        rc = smbldap_modify(ldap_state->smbldap_state, dn, mods);
 
@@ -3323,11 +3574,12 @@ static NTSTATUS ldapsam_enum_aliasmem(struct pdb_methods *methods,
        LDAPMessage *result = NULL;
        LDAPMessage *entry = NULL;
        int count;
-       char **values;
+       char **values = NULL;
        int i;
-       pstring filter;
+       char *filter = NULL;
        size_t num_members = 0;
        enum lsa_SidType type = SID_NAME_USE_NONE;
+       fstring tmp;
 
        *pp_members = NULL;
        *p_num_members = 0;
@@ -3342,18 +3594,22 @@ static NTSTATUS ldapsam_enum_aliasmem(struct pdb_methods *methods,
 
        if (type == SID_NAME_USE_NONE) {
                DEBUG(5, ("SID %s is neither in builtin nor in our domain!\n",
-                         sid_string_static(alias)));
+                         sid_string_dbg(alias)));
                return NT_STATUS_NO_SUCH_ALIAS;
        }
 
-       pstr_sprintf(filter,
+       if (asprintf(&filter,
                     "(&(objectClass=%s)(sambaSid=%s)(sambaGroupType=%d))",
-                    LDAP_OBJ_GROUPMAP, sid_string_static(alias),
-                    type);
+                    LDAP_OBJ_GROUPMAP, sid_to_fstring(tmp, alias),
+                    type) < 0) {
+               return NT_STATUS_NO_MEMORY;
+       }
 
        if (ldapsam_search_one_group(ldap_state, filter,
-                                    &result) != LDAP_SUCCESS)
+                                    &result) != LDAP_SUCCESS) {
+               SAFE_FREE(filter);
                return NT_STATUS_NO_SUCH_ALIAS;
+       }
 
        count = ldap_count_entries(ldap_state->smbldap_state->ldap_struct,
                                   result);
@@ -3361,6 +3617,7 @@ static NTSTATUS ldapsam_enum_aliasmem(struct pdb_methods *methods,
        if (count < 1) {
                DEBUG(4, ("ldapsam_enum_aliasmem: Did not find alias\n"));
                ldap_msgfree(result);
+               SAFE_FREE(filter);
                return NT_STATUS_NO_SUCH_ALIAS;
        }
 
@@ -3368,9 +3625,12 @@ static NTSTATUS ldapsam_enum_aliasmem(struct pdb_methods *methods,
                DEBUG(1, ("ldapsam_enum_aliasmem: Duplicate entries for "
                          "filter %s: count=%d\n", filter, count));
                ldap_msgfree(result);
+               SAFE_FREE(filter);
                return NT_STATUS_NO_SUCH_ALIAS;
        }
 
+       SAFE_FREE(filter);
+
        entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct,
                                 result);
 
@@ -3393,14 +3653,17 @@ static NTSTATUS ldapsam_enum_aliasmem(struct pdb_methods *methods,
 
        for (i=0; i<count; i++) {
                DOM_SID member;
+               NTSTATUS status;
 
                if (!string_to_sid(&member, values[i]))
                        continue;
 
-               if (!add_sid_to_array(NULL, &member, pp_members, &num_members)) {
+               status = add_sid_to_array(NULL, &member, pp_members,
+                                         &num_members);
+               if (!NT_STATUS_IS_OK(status)) {
                        ldap_value_free(values);
                        ldap_msgfree(result);
-                       return NT_STATUS_NO_MEMORY;
+                       return status;
                }
        }
 
@@ -3442,7 +3705,7 @@ static NTSTATUS ldapsam_alias_memberships(struct pdb_methods *methods,
 
        if (type == SID_NAME_USE_NONE) {
                DEBUG(5, ("SID %s is neither builtin nor domain!\n",
-                         sid_string_static(domain_sid)));
+                         sid_string_dbg(domain_sid)));
                return NT_STATUS_UNSUCCESSFUL;
        }
 
@@ -3453,7 +3716,8 @@ static NTSTATUS ldapsam_alias_memberships(struct pdb_methods *methods,
        for (i=0; i<num_members; i++)
                filter = talloc_asprintf(mem_ctx, "%s(sambaSIDList=%s)",
                                         filter,
-                                        sid_string_static(&members[i]));
+                                        sid_string_talloc(mem_ctx,
+                                                          &members[i]));
 
        filter = talloc_asprintf(mem_ctx, "%s))", filter);
 
@@ -3701,7 +3965,7 @@ static NTSTATUS ldapsam_lookup_rids(struct pdb_methods *methods,
        NTSTATUS result = NT_STATUS_NO_MEMORY;
        TALLOC_CTX *mem_ctx;
        LDAP *ld;
-       BOOL is_builtin;
+       bool is_builtin;
 
        mem_ctx = talloc_new(NULL);
        if (mem_ctx == NULL) {
@@ -3726,8 +3990,9 @@ static NTSTATUS ldapsam_lookup_rids(struct pdb_methods *methods,
        for (i=0; i<num_rids; i++) {
                DOM_SID sid;
                sid_compose(&sid, domain_sid, rids[i]);
-               allsids = talloc_asprintf_append_buffer(allsids, "(sambaSid=%s)",
-                                                sid_string_static(&sid));
+               allsids = talloc_asprintf_append_buffer(
+                       allsids, "(sambaSid=%s)",
+                       sid_string_talloc(mem_ctx, &sid));
                if (allsids == NULL) {
                        goto done;
                }
@@ -3970,13 +4235,13 @@ struct ldap_search_state {
        void *pagedresults_cookie;
 
        LDAPMessage *entries, *current_entry;
-       BOOL (*ldap2displayentry)(struct ldap_search_state *state,
+       bool (*ldap2displayentry)(struct ldap_search_state *state,
                                  TALLOC_CTX *mem_ctx,
                                  LDAP *ld, LDAPMessage *entry,
                                  struct samr_displayentry *result);
 };
 
-static BOOL ldapsam_search_firstpage(struct pdb_search *search)
+static bool ldapsam_search_firstpage(struct pdb_search *search)
 {
        struct ldap_search_state *state =
                (struct ldap_search_state *)search->private_data;
@@ -4029,7 +4294,7 @@ static BOOL ldapsam_search_firstpage(struct pdb_search *search)
        return True;
 }
 
-static BOOL ldapsam_search_nextpage(struct pdb_search *search)
+static bool ldapsam_search_nextpage(struct pdb_search *search)
 {
        struct ldap_search_state *state =
                (struct ldap_search_state *)search->private_data;
@@ -4059,12 +4324,12 @@ static BOOL ldapsam_search_nextpage(struct pdb_search *search)
        return True;
 }
 
-static BOOL ldapsam_search_next_entry(struct pdb_search *search,
+static bool ldapsam_search_next_entry(struct pdb_search *search,
                                      struct samr_displayentry *entry)
 {
        struct ldap_search_state *state =
                (struct ldap_search_state *)search->private_data;
-       BOOL result;
+       bool result;
 
  retry:
        if ((state->entries == NULL) && (state->pagedresults_cookie == NULL))
@@ -4127,7 +4392,7 @@ static void ldapsam_search_end(struct pdb_search *search)
        return;
 }
 
-static BOOL ldapuser2displayentry(struct ldap_search_state *state,
+static bool ldapuser2displayentry(struct ldap_search_state *state,
                                  TALLOC_CTX *mem_ctx,
                                  LDAP *ld, LDAPMessage *entry,
                                  struct samr_displayentry *result)
@@ -4203,7 +4468,7 @@ static BOOL ldapuser2displayentry(struct ldap_search_state *state,
 
        if (!sid_peek_check_rid(get_global_sam_sid(), &sid, &result->rid)) {
                DEBUG(0, ("sid %s does not belong to our domain\n",
-                         sid_string_static(&sid)));
+                         sid_string_dbg(&sid)));
                return False;
        }
 
@@ -4211,7 +4476,7 @@ static BOOL ldapuser2displayentry(struct ldap_search_state *state,
 }
 
 
-static BOOL ldapsam_search_users(struct pdb_methods *methods,
+static bool ldapsam_search_users(struct pdb_methods *methods,
                                 struct pdb_search *search,
                                 uint32 acct_flags)
 {
@@ -4259,7 +4524,7 @@ static BOOL ldapsam_search_users(struct pdb_methods *methods,
        return ldapsam_search_firstpage(search);
 }
 
-static BOOL ldapgroup2displayentry(struct ldap_search_state *state,
+static bool ldapgroup2displayentry(struct ldap_search_state *state,
                                   TALLOC_CTX *mem_ctx,
                                   LDAP *ld, LDAPMessage *entry,
                                   struct samr_displayentry *result)
@@ -4356,7 +4621,7 @@ static BOOL ldapgroup2displayentry(struct ldap_search_state *state,
                                && !sid_peek_check_rid(&global_sid_Builtin, &sid, &result->rid)) 
                        {
                                DEBUG(0, ("%s is not in our domain\n",
-                                         sid_string_static(&sid)));
+                                         sid_string_dbg(&sid)));
                                return False;
                        }
                        break;
@@ -4369,7 +4634,7 @@ static BOOL ldapgroup2displayentry(struct ldap_search_state *state,
        return True;
 }
 
-static BOOL ldapsam_search_grouptype(struct pdb_methods *methods,
+static bool ldapsam_search_grouptype(struct pdb_methods *methods,
                                     struct pdb_search *search,
                                      const DOM_SID *sid,
                                     enum lsa_SidType type)
@@ -4377,6 +4642,7 @@ static BOOL ldapsam_search_grouptype(struct pdb_methods *methods,
        struct ldapsam_privates *ldap_state =
                (struct ldapsam_privates *)methods->private_data;
        struct ldap_search_state *state;
+       fstring tmp;
 
        state = TALLOC_P(search->mem_ctx, struct ldap_search_state);
        if (state == NULL) {
@@ -4392,7 +4658,7 @@ static BOOL ldapsam_search_grouptype(struct pdb_methods *methods,
        state->filter = talloc_asprintf(search->mem_ctx,
                                        "(&(objectclass=sambaGroupMapping)"
                                        "(sambaGroupType=%d)(sambaSID=%s*))", 
-                                       type, sid_string_static(sid));
+                                       type, sid_to_fstring(tmp, sid));
        state->attrs = talloc_attrs(search->mem_ctx, "cn", "sambaSid",
                                    "displayName", "description",
                                    "sambaGroupType", NULL);
@@ -4414,20 +4680,20 @@ static BOOL ldapsam_search_grouptype(struct pdb_methods *methods,
        return ldapsam_search_firstpage(search);
 }
 
-static BOOL ldapsam_search_groups(struct pdb_methods *methods,
+static bool ldapsam_search_groups(struct pdb_methods *methods,
                                  struct pdb_search *search)
 {
        return ldapsam_search_grouptype(methods, search, get_global_sam_sid(), SID_NAME_DOM_GRP);
 }
 
-static BOOL ldapsam_search_aliases(struct pdb_methods *methods,
+static bool ldapsam_search_aliases(struct pdb_methods *methods,
                                   struct pdb_search *search,
                                   const DOM_SID *sid)
 {
        return ldapsam_search_grouptype(methods, search, sid, SID_NAME_ALIAS);
 }
 
-static BOOL ldapsam_rid_algorithm(struct pdb_methods *methods)
+static bool ldapsam_rid_algorithm(struct pdb_methods *methods)
 {
        return False;
 }
@@ -4551,13 +4817,13 @@ static NTSTATUS ldapsam_new_rid_internal(struct pdb_methods *methods, uint32 *ri
        return NT_STATUS_ACCESS_DENIED;
 }
 
-static BOOL ldapsam_new_rid(struct pdb_methods *methods, uint32 *rid)
+static bool ldapsam_new_rid(struct pdb_methods *methods, uint32 *rid)
 {
        NTSTATUS result = ldapsam_new_rid_internal(methods, rid);
        return NT_STATUS_IS_OK(result) ? True : False;
 }
 
-static BOOL ldapsam_sid_to_id(struct pdb_methods *methods,
+static bool ldapsam_sid_to_id(struct pdb_methods *methods,
                              const DOM_SID *sid,
                              union unid_t *id, enum lsa_SidType *type)
 {
@@ -4568,7 +4834,7 @@ static BOOL ldapsam_sid_to_id(struct pdb_methods *methods,
                                NULL };
        LDAPMessage *result = NULL;
        LDAPMessage *entry = NULL;
-       BOOL ret = False;
+       bool ret = False;
        char *value;
        int rc;
 
@@ -4583,7 +4849,7 @@ static BOOL ldapsam_sid_to_id(struct pdb_methods *methods,
        filter = talloc_asprintf(mem_ctx,
                                 "(&(sambaSid=%s)"
                                 "(|(objectClass=%s)(objectClass=%s)))",
-                                sid_string_static(sid),
+                                sid_string_talloc(mem_ctx, sid),
                                 LDAP_OBJ_GROUPMAP, LDAP_OBJ_SAMBASAMACCOUNT);
        if (filter == NULL) {
                DEBUG(5, ("talloc_asprintf failed\n"));
@@ -4668,8 +4934,8 @@ static NTSTATUS ldapsam_create_user(struct pdb_methods *my_methods,
        LDAPMessage *entry = NULL;
        LDAPMessage *result = NULL;
        uint32 num_result;
-       BOOL is_machine = False;
-       BOOL add_posix = False;
+       bool is_machine = False;
+       bool add_posix = False;
        LDAPMod **mods = NULL;
        struct samu *user;
        char *filter;
@@ -4957,7 +5223,7 @@ static NTSTATUS ldapsam_create_dom_group(struct pdb_methods *my_methods,
        LDAPMessage *entry = NULL;
        LDAPMessage *result = NULL;
        uint32 num_result;
-       BOOL is_new_entry = False;
+       bool is_new_entry = False;
        LDAPMod **mods = NULL;
        char *filter;
        char *groupsidstr;
@@ -5063,7 +5329,8 @@ static NTSTATUS ldapsam_create_dom_group(struct pdb_methods *my_methods,
 
        sid_compose(&group_sid, get_global_sam_sid(), *rid);
 
-       groupsidstr = talloc_strdup(tmp_ctx, sid_string_static(&group_sid));
+       groupsidstr = talloc_strdup(tmp_ctx, sid_string_talloc(tmp_ctx,
+                                                              &group_sid));
        grouptype = talloc_asprintf(tmp_ctx, "%d", SID_NAME_DOM_GRP);
 
        if (!groupsidstr || !grouptype) {
@@ -5120,7 +5387,7 @@ static NTSTATUS ldapsam_delete_dom_group(struct pdb_methods *my_methods, TALLOC_
                                 "(&(sambaSID=%s)"
                                 "(objectClass=%s)"
                                 "(objectClass=%s))",
-                                sid_string_static(&group_sid),
+                                sid_string_talloc(tmp_ctx, &group_sid),
                                 LDAP_OBJ_POSIXGROUP,
                                 LDAP_OBJ_GROUPMAP);
        if (filter == NULL) {
@@ -5234,7 +5501,7 @@ static NTSTATUS ldapsam_change_groupmem(struct pdb_methods *my_methods,
                                 "(&(sambaSID=%s)"
                                 "(objectClass=%s)"
                                 "(objectClass=%s))",
-                                sid_string_static(&member_sid),
+                                sid_string_talloc(tmp_ctx, &member_sid),
                                 LDAP_OBJ_POSIXACCOUNT,
                                 LDAP_OBJ_SAMBASAMACCOUNT);
        if (filter == NULL) {
@@ -5285,7 +5552,7 @@ static NTSTATUS ldapsam_change_groupmem(struct pdb_methods *my_methods,
                }
 
                if (user_gid == group_gid) {
-                       DEBUG (3, ("ldapsam_change_groupmem: can't remove user from it's own primary group!\n"));
+                       DEBUG (3, ("ldapsam_change_groupmem: can't remove user from its own primary group!\n"));
                        return NT_STATUS_MEMBERS_PRIMARY_GROUP;
                }
        }
@@ -5301,7 +5568,7 @@ static NTSTATUS ldapsam_change_groupmem(struct pdb_methods *my_methods,
                                 "(&(sambaSID=%s)"
                                 "(objectClass=%s)"
                                 "(objectClass=%s))",
-                                sid_string_static(&group_sid),
+                                sid_string_talloc(tmp_ctx, &group_sid),
                                 LDAP_OBJ_POSIXGROUP,
                                 LDAP_OBJ_GROUPMAP);
 
@@ -5482,7 +5749,7 @@ static char *trusteddom_dn(struct ldapsam_privates *ldap_state,
                               ldap_state->domain_dn);
 }
 
-static BOOL get_trusteddom_pw_int(struct ldapsam_privates *ldap_state,
+static bool get_trusteddom_pw_int(struct ldapsam_privates *ldap_state,
                                  const char *domain, LDAPMessage **entry)
 {
        int rc;
@@ -5535,7 +5802,7 @@ static BOOL get_trusteddom_pw_int(struct ldapsam_privates *ldap_state,
        return True;
 }
 
-static BOOL ldapsam_get_trusteddom_pw(struct pdb_methods *methods,
+static bool ldapsam_get_trusteddom_pw(struct pdb_methods *methods,
                                      const char *domain,
                                      char** pwd,
                                      DOM_SID *sid,
@@ -5599,7 +5866,7 @@ static BOOL ldapsam_get_trusteddom_pw(struct pdb_methods *methods,
        return True;
 }
 
-static BOOL ldapsam_set_trusteddom_pw(struct pdb_methods *methods,
+static bool ldapsam_set_trusteddom_pw(struct pdb_methods *methods,
                                      const char* domain,
                                      const char* pwd,
                                      const DOM_SID *sid)
@@ -5661,7 +5928,7 @@ static BOOL ldapsam_set_trusteddom_pw(struct pdb_methods *methods,
        return True;
 }
 
-static BOOL ldapsam_del_trusteddom_pw(struct pdb_methods *methods,
+static bool ldapsam_del_trusteddom_pw(struct pdb_methods *methods,
                                      const char *domain)
 {
        int rc;
@@ -5820,9 +6087,6 @@ static NTSTATUS pdb_init_ldapsam_common(struct pdb_methods **pdb_method, const c
 
        (*pdb_method)->name = "ldapsam";
 
-       (*pdb_method)->setsampwent = ldapsam_setsampwent;
-       (*pdb_method)->endsampwent = ldapsam_endsampwent;
-       (*pdb_method)->getsampwent = ldapsam_getsampwent;
        (*pdb_method)->getsampwnam = ldapsam_getsampwnam;
        (*pdb_method)->getsampwsid = ldapsam_getsampwsid;
        (*pdb_method)->add_sam_account = ldapsam_add_sam_account;
@@ -5912,21 +6176,22 @@ NTSTATUS pdb_init_ldapsam_compat(struct pdb_methods **pdb_method, const char *lo
 NTSTATUS pdb_init_ldapsam(struct pdb_methods **pdb_method, const char *location)
 {
        NTSTATUS nt_status;
-       struct ldapsam_privates *ldap_state;
+       struct ldapsam_privates *ldap_state = NULL;
        uint32 alg_rid_base;
-       pstring alg_rid_base_string;
+       char *alg_rid_base_string = NULL;
        LDAPMessage *result = NULL;
        LDAPMessage *entry = NULL;
        DOM_SID ldap_domain_sid;
        DOM_SID secrets_domain_sid;
-       pstring domain_sid_string;
-       char *dn;
+       char *domain_sid_string = NULL;
+       char *dn = NULL;
        char *uri = talloc_strdup( NULL, location );
 
        trim_char( uri, '\"', '\"' );
        nt_status = pdb_init_ldapsam_common(pdb_method, uri);
-       if ( uri )
-               TALLOC_FREE( uri );
+       if (uri) {
+               TALLOC_FREE(uri);
+       }
 
        if (!NT_STATUS_IS_OK(nt_status)) {
                return nt_status;
@@ -5948,7 +6213,7 @@ NTSTATUS pdb_init_ldapsam(struct pdb_methods **pdb_method, const char *location)
                        ldapsam_enum_group_memberships;
                (*pdb_method)->lookup_rids = ldapsam_lookup_rids;
                (*pdb_method)->sid_to_id = ldapsam_sid_to_id;
-               
+
                if (lp_parm_bool(-1, "ldapsam", "editposix", False)) {
                        (*pdb_method)->create_user = ldapsam_create_user;
                        (*pdb_method)->delete_user = ldapsam_delete_user;
@@ -5964,11 +6229,11 @@ NTSTATUS pdb_init_ldapsam(struct pdb_methods **pdb_method, const char *location)
        ldap_state->schema_ver = SCHEMAVER_SAMBASAMACCOUNT;
 
        /* Try to setup the Domain Name, Domain SID, algorithmic rid base */
-       
+
        nt_status = smbldap_search_domain_info(ldap_state->smbldap_state,
-                                              &result, 
+                                              &result,
                                               ldap_state->domain_name, True);
-       
+
        if ( !NT_STATUS_IS_OK(nt_status) ) {
                DEBUG(2, ("pdb_init_ldapsam: WARNING: Could not get domain "
                          "info, nor add one to the domain\n"));
@@ -5981,7 +6246,7 @@ NTSTATUS pdb_init_ldapsam(struct pdb_methods **pdb_method, const char *location)
 
        /* Given that the above might fail, everything below this must be
         * optional */
-       
+
        entry = ldap_first_entry(ldap_state->smbldap_state->ldap_struct,
                                 result);
        if (!entry) {
@@ -6000,56 +6265,59 @@ NTSTATUS pdb_init_ldapsam(struct pdb_methods **pdb_method, const char *location)
        ldap_state->domain_dn = smb_xstrdup(dn);
        ldap_memfree(dn);
 
-       if (smbldap_get_single_pstring(
+       domain_sid_string = smbldap_talloc_single_attribute(
                    ldap_state->smbldap_state->ldap_struct,
-                   entry, 
+                   entry,
                    get_userattr_key2string(ldap_state->schema_ver,
-                                           LDAP_ATTR_USER_SID), 
-                   domain_sid_string)) {
-               BOOL found_sid;
+                                           LDAP_ATTR_USER_SID),
+                   talloc_tos());
+
+       if (domain_sid_string) {
+               bool found_sid;
                if (!string_to_sid(&ldap_domain_sid, domain_sid_string)) {
                        DEBUG(1, ("pdb_init_ldapsam: SID [%s] could not be "
                                  "read as a valid SID\n", domain_sid_string));
                        ldap_msgfree(result);
+                       TALLOC_FREE(domain_sid_string);
                        return NT_STATUS_INVALID_PARAMETER;
                }
                found_sid = secrets_fetch_domain_sid(ldap_state->domain_name,
                                                     &secrets_domain_sid);
                if (!found_sid || !sid_equal(&secrets_domain_sid,
                                             &ldap_domain_sid)) {
-                       fstring new_sid_str, old_sid_str;
                        DEBUG(1, ("pdb_init_ldapsam: Resetting SID for domain "
                                  "%s based on pdb_ldap results %s -> %s\n",
                                  ldap_state->domain_name,
-                                 sid_to_string(old_sid_str,
-                                               &secrets_domain_sid),
-                                 sid_to_string(new_sid_str,
-                                               &ldap_domain_sid)));
-                       
+                                 sid_string_dbg(&secrets_domain_sid),
+                                 sid_string_dbg(&ldap_domain_sid)));
+
                        /* reset secrets.tdb sid */
                        secrets_store_domain_sid(ldap_state->domain_name,
                                                 &ldap_domain_sid);
                        DEBUG(1, ("New global sam SID: %s\n",
-                                 sid_to_string(new_sid_str,
-                                               get_global_sam_sid())));
+                                 sid_string_dbg(get_global_sam_sid())));
                }
                sid_copy(&ldap_state->domain_sid, &ldap_domain_sid);
+               TALLOC_FREE(domain_sid_string);
        }
 
-       if (smbldap_get_single_pstring(
+       alg_rid_base_string = smbldap_talloc_single_attribute(
                    ldap_state->smbldap_state->ldap_struct,
-                   entry, 
+                   entry,
                    get_attr_key2string( dominfo_attr_list,
                                         LDAP_ATTR_ALGORITHMIC_RID_BASE ),
-                   alg_rid_base_string)) {
+                   talloc_tos());
+       if (alg_rid_base_string) {
                alg_rid_base = (uint32)atol(alg_rid_base_string);
                if (alg_rid_base != algorithmic_rid_base()) {
                        DEBUG(0, ("The value of 'algorithmic RID base' has "
                                  "changed since the LDAP\n"
                                  "database was initialised.  Aborting. \n"));
                        ldap_msgfree(result);
+                       TALLOC_FREE(alg_rid_base_string);
                        return NT_STATUS_UNSUCCESSFUL;
                }
+               TALLOC_FREE(alg_rid_base_string);
        }
        ldap_msgfree(result);