-----------------------------------------------------------------------
-- keystore-passwords-input -- Interactive based password provider
-- Copyright (C) 2019 Stephane Carrez
-- Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-----------------------------------------------------------------------
with Ada.Text_IO;
with Ada.IO_Exceptions;
package body Keystore.Passwords.Input is
use Ada.Streams;
-- ------------------------------
-- Create a password provider that asks interactively for the password.
-- ------------------------------
function Create (Message : in String;
Confirm : in Boolean) return Provider_Access is
pragma Unreferenced (Confirm);
Content : Ada.Streams.Stream_Element_Array (1 .. MAX_PASSWORD_LENGTH);
C : Character;
Length : Ada.Streams.Stream_Element_Offset := 0;
begin
Ada.Text_IO.Put (Message);
begin
loop
Ada.Text_IO.Get_Immediate (C);
exit when C < ' ';
Length := Length + 1;
Content (Length) := Character'Pos (C);
end loop;
exception
when Ada.IO_Exceptions.End_Error =>
null;
end;
Ada.Text_IO.New_Line;
if Length = 0 then
raise Keystore.Bad_Password with "Empty password given";
end if;
return Create (Content (Content'First .. Length));
end Create;
end Keystore.Passwords.Input;