ITS#9444 Pass original message when chain-return-error is set

servers/slapd/back-ldap/chain.c

@@ -119,6 +119,7 @@ typedef struct ldap_chain_cb_t {
 	ldap_chain_status_t	lb_status;
 	ldap_chain_t		*lb_lc;
 	slap_operation_t	lb_op_type;
+	char			*lb_text;
 	int			lb_depth;
 } ldap_chain_cb_t;
 
@@ -381,6 +382,11 @@ retry:;
 			break;
 
 		default:
+			/* remember the text before it's freed in ldap_back_op_result */
+			if ( lb.lb_text ) {
+				ber_memfree_x( lb.lb_text, op->o_tmpmemctx );
+			}
+			lb->lb_text = ber_strdup_x( rs->sr_text, op->o_tmpmemctx );
 			return rs->sr_err;
 		}
 
@@ -1153,6 +1159,7 @@ cannot_chain:;
 #endif /* LDAP_CONTROL_X_CHAINING_BEHAVIOR */
 			if ( LDAP_CHAIN_RETURN_ERR( lc ) ) {
 				sr_err = rs->sr_err = rc;
+				rs->sr_text = lb.lb_text;
 				rs->sr_type = sr_type;
 
 			} else {
@@ -1186,6 +1193,13 @@ dont_chain:;
 	op->o_callback = sc;
 	op->o_ndn = ndn;
 
+	if ( rs->sr_text == lb.lb_text ) {
+		rs->sr_text = NULL;
+	}
+	if ( lb.lb_text ) {
+		ber_memfree_x( lb.lb_text, op->o_tmpmemctx );
+	}
+
 	return rc;
 }