/usr/share/ada/adainclude/aws/aws-digest.ads is in libaws3.3.2-dev 3.3.2-2.
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-- Ada Web Server --
-- --
-- Copyright (C) 2000-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, or (at your option) any --
-- later version. This library 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. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are --
-- granted additional permissions described in the GCC Runtime Library --
-- Exception, version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
pragma Ada_2012;
-- Some utilities for HTTP digest authentication
with GNAT.MD5;
package AWS.Digest is
subtype Digest_String is GNAT.MD5.Message_Digest with
Dynamic_Predicate =>
(for all C of Digest_String
=> C in 'a' .. 'z' | 'A' .. 'Z' | '0' .. '9' | '+' | '/' | '=');
subtype Nonce is String (1 .. 40);
-- 4 bytes base64 seconds, 4 bytes base64 global counter, 32 bytes digest
-- of the private key, creation time and global counter.
function Create_Nonce return Nonce;
-- Create a Nonce value for the digest authentication
-- see [RFC-2617 - 3.2.1]
function Check_Nonce (Value : String) return Boolean;
-- Check Nonce for validity and expiration.
-- We could not send a type Nonce here, because Nonce received from
-- HTTP client, and have to checked for the length too.
function Create
(Username, Realm, Password : String;
Nonce : String;
Method, URI : String) return Digest_String with Inline;
-- Returns a simple MD5 Digest
function Create
(Username, Realm, Password : String;
Nonce, NC, CNonce, QOP : String;
Method, URI : String) return Digest_String;
-- Returns a more complex MD5 Digest if QOP field is not empty
function Tail
(Nonce, NC, CNonce, QOP, Method, URI : String) return String with Inline;
-- Returns the precalculated tail part of the digest
-- if QOP field is not empty
-- Tail := ':' & Nonce & ':' & NC & ':' & CNonce & ':' & QOP & ':'
-- & MD5.Digest (Method & ':' & URI);
-- otherwise
-- Tail := ':' & Nonce & ':' & MD5.Digest (Method & ':' & URI);
end AWS.Digest;
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