/*
 * $Id$
 *
 *
 * SQUID Web Proxy Cache          http://www.squid-cache.org/
 * ----------------------------------------------------------
 *
 *  Squid is the result of efforts by numerous individuals from
 *  the Internet community; see the CONTRIBUTORS file for full
 *  details.   Many organizations have provided support for Squid's
 *  development; see the SPONSORS file for full details.  Squid is
 *  Copyrighted (C) 2001 by the Regents of the University of
 *  California; see the COPYRIGHT file for full details.  Squid
 *  incorporates software developed and/or copyrighted by other
 *  sources; see the CREDITS file for full details.
 *
 *  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 program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
 *
 */

#ifndef SQUID_AUTHSCHEME_H
#define SQUID_AUTHSCHEME_H

#include "squid.h"
#include "Array.h"

/**
 \defgroup AuthSchemeAPI	Authentication Scheme API
 \ingroup AuthAPI
 */

/**
 \ingroup AuthAPI
 \ingroup AuthSchemeAPI
 \par
 * I represent an authentication scheme. For now my children
 * store both the scheme metadata, and the scheme configuration.
 \par
 * Should we need multiple configs of a single scheme,
 * a new class AuthConfiguration should be made, and the
 * config specific calls on AuthScheme moved to it.
 */
class AuthScheme
{

public:
    static void AddScheme(AuthScheme &);
    static void FreeAll();
    static Vector<AuthScheme*> const &Schemes();
    static AuthScheme *Find(const char *);
    typedef Vector<AuthScheme*>::iterator iterator;
    typedef Vector<AuthScheme*>::const_iterator const_iterator;
    AuthScheme() : initialised (false) {}

    virtual ~AuthScheme() {}

    /* per scheme methods */
    virtual char const *type () const = 0;
    virtual void done() = 0;
    virtual AuthConfig *createConfig() = 0;
    // Not implemented
    AuthScheme(AuthScheme const &);
    AuthScheme &operator=(AuthScheme const&);

protected:
    bool initialised;

private:
    static Vector<AuthScheme*> &GetSchemes();
    static Vector<AuthScheme*> *_Schemes;
};

#endif /* SQUID_AUTHSCHEME_H */