File : adagio-ed2k.adb
------------------------------------------------------------------------------
-- ADAGIO - ADALID - AENEA. --
-- --
-- Copyright (C) 2003 --
-- A. Mosteo. --
-- --
-- Authors: A. Mosteo. (adagio@mosteo.com) --
-- --
-- If you have any questions in regard to this software, please address --
-- them to the above email. --
-- --
-- This program is free software; you can redistribute it and/or modify --
-- it under the terms of the GNU General Public License as published by --
-- the Free Software Foundation; either version 2 of the License, or (at --
-- your option) any later version. --
-- --
-- This program is distributed in the hope that it will be useful, but --
-- WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public License --
-- along with this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
-- --
-- You are not allowed to use any part of this code to develop a program --
-- whose output would be used to harass or prosecute other users of the --
-- networks Adagio connects with. All data collected with Adagio or a tool --
-- containing Adagio code about other network users must remain --
-- confidential and cannot be made public by any mean, nor be used to --
-- harass or legally prosecute these users. --
------------------------------------------------------------------------------
-- $Id: adagio-ed2k.adb,v 1.3 2004/01/21 21:05:25 Jano Exp $
with Acf.Types;
package body Adagio.Ed2k is
------------------------------------------------------------------------
-- Hash_as_hex --
------------------------------------------------------------------------
-- Convert a ed2k hash to its Hex representation:
function Hash_as_hex (Hash : in Hash_type) return String is
begin
return Acf.Hash.Message_digests.To_hex_string (
Hash, Acf.Types.Lower_case);
end Hash_as_hex;
------------------------------------------------------------------------
-- Hash_as_char_array --
------------------------------------------------------------------------
-- Convert a ed2k hash to a String containing its bytes.
function Hash_as_char_array (Hash : in Hash_type) return String is
B : Acf.Types.Byte_array :=
Acf.Hash.Message_digests.To_byte_array (Hash);
S : String (B'range);
begin
for N in S'range loop
S (N) := Character'Val (Acf.Types.Byte'Pos (B (N)));
end loop;
return S;
end;
------------------------------------------------------------------------
-- Hash_from_char_array --
------------------------------------------------------------------------
-- Obtains a digest from a String containing bytes.
function Hash_from_char_array (S : in String) return Hash_type is
B : Acf.Types.Byte_array (S'range);
begin
if B'length /= 16 then
raise Incorrect_hash_length;
end if;
for N in B'range loop
B (N) := Acf.Types.Byte'Val (Character'Pos (S (N)));
end loop;
return Acf.Hash.Message_digests.To_message_digest (B);
end Hash_from_char_array;
end Adagio.Ed2k;