-----------------------------------------------------------------------
--  wallet_ssh_askpass -- Open wallet and ask password by running a command
--  Copyright (C) 2020 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.Command_Line;
with Keystore.Files;
with Keystore.Passwords.Cmds;

procedure Wallet_Ssh_Askpass is
   Count  : constant Natural := Ada.Command_Line.Argument_Count;
begin
   if Count <= 1 then
      Ada.Text_IO.Put_Line ("Usage: wallet_ask_pass <keystore-path> {name...}");
      return;
   end if;
   declare
      Path : constant String := Ada.Command_Line.Argument (1);
      Key  : Keystore.Passwords.Provider_Access;
      Info : Keystore.Wallet_Info;
      WS   : Keystore.Files.Wallet_File;
      Slot : Keystore.Key_Slot;
   begin
      WS.Open (Path => Path, Info => Info);
      Key := Keystore.Passwords.Cmds.Create ("ssh-askpass");
      WS.Unlock (Key.all, Slot);
      for I in 2 .. Count loop
         declare
            Name : constant String := Ada.Command_Line.Argument (I);
         begin
            Ada.Text_IO.Put (Name);
            Ada.Text_IO.Put (" = ");
            if WS.Contains (Name) then
               Ada.Text_IO.Put (WS.Get (Name));
            end if;
            Ada.Text_IO.New_Line;
         end;
      end loop;

   exception
      when Keystore.Bad_Password =>
         Ada.Text_IO.Put_Line ("Invalid password!");

   end;
end Wallet_Ssh_Askpass;