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/*
 * AuthManager.h
 *
 * Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_COMMON_AUTHMANAGER_H_
#define MAD_COMMON_AUTHMANAGER_H_

#include "export.h"

#include "AuthContext.h"

#include <Core/Exception.h>

#include <map>
#include <set>

#include <boost/noncopyable.hpp>
#include <boost/shared_ptr.hpp>

#include <boost/thread/shared_mutex.hpp>

namespace Mad {
namespace Common {

class Application;

class AuthBackend;
class AuthProvider;

class MAD_COMMON_EXPORT AuthManager : private boost::noncopyable {
  private:
    friend class Application;

    boost::shared_ptr<AuthProvider> provider;

    std::set<Core::String> methods;
    std::map<Core::String, boost::shared_ptr<AuthBackend> > backends;

    boost::shared_mutex mutex;

    AuthManager() {}

  public:
    void setProvider(boost::shared_ptr<AuthProvider> newProvider);
    void unsetProvider(boost::shared_ptr<AuthProvider> oldProvider);

    void registerBackend(boost::shared_ptr<AuthBackend> backend);
    void unregisterBackend(boost::shared_ptr<AuthBackend> backend);

    const std::set<Core::String>& getMethods();
    std::vector<Core::String> getSubMethods(const Core::String &method) throw(Core::Exception);

    boost::shared_ptr<AuthContext> authenticate(const Core::String &method, const Core::String &subMethod,
        const Core::String &user, const std::vector<boost::uint8_t> &data, std::vector<boost::uint8_t> &response,
        boost::shared_ptr<AuthContext> context = boost::shared_ptr<AuthContext>()) throw(Core::Exception);
};

}
}

#endif /* MAD_COMMON_AUTHMANAGER_H_ */