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/* Copyright © 2005-2007  Roger Leigh <rleigh@debian.org>
 *
 * schroot 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 3 of the License, or
 * (at your option) any later version.
 *
 * schroot 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, see
 * <http://www.gnu.org/licenses/>.
 *
 *********************************************************************/

#ifndef SBUILD_AUTH_NULL_H
#define SBUILD_AUTH_NULL_H

#include <sbuild/sbuild-auth.h>

namespace sbuild
{

  /**
   * Null Authentication handler.
   *
   * auth_null handles user authentication, authorisation and session
   * management.  Unlike auth_pam, it does nothing.  All attempts to
   * authenticate will fail.
   */
  class auth_null : public auth
  {
  private:
    /**
     * The constructor.
     *
     * @param service_name the PAM service name.  This should be a
     * hard-coded constant string literal for safety and security.
     * This is passed to pam_start() when initialising PAM, and is
     * used to load the correct configuration file from /etc/pam.d.
     */
    auth_null (std::string const& service_name);

  public:
    /**
     * The destructor.
     */
    virtual ~auth_null ();

    /**
     * Create an auth_null object.
     *
     * @param service_name the PAM service name.  This should be a
     * hard-coded constant string literal for safety and security.
     * This is passed to pam_start() when initialising PAM, and is
     * used to load the correct configuration file from /etc/pam.d.
     * @returns a shared pointer to the created object.
     */
    static auth::ptr
    create (std::string const& service_name);

    /**
     * Get the PAM environment.  This is the environment as set by PAM
     * modules.
     *
     * @returns an environment list.
     */
    virtual environment
    get_auth_environment () const;

    virtual void
    start ();

    virtual void
    stop ();

    virtual void
    authenticate (status auth_status);

    virtual bool
    is_initialised () const;

  protected:
    /// Is the serive initialised?
    bool         initialised;
    /// Minimal environment.
    environment  auth_environment;
  };

}

#endif /* SBUILD_AUTH_NULL_H */

/*
 * Local Variables:
 * mode:C++
 * End:
 */