auth.h

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/* $Header: /var/cvs/mbdyn/mbdyn/mbdyn-1.0/mbdyn/base/auth.h,v 1.20 2017/01/12 14:46:08 masarati Exp $ */
/*
 * MBDyn (C) is a multibody analysis code.
 * http://www.mbdyn.org
 *
 * Copyright (C) 1996-2017
 *
 * Pierangelo Masarati  <masarati@aero.polimi.it>
 * Paolo Mantegazza     <mantegazza@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *
 * Changing this copyright notice is forbidden.
 *
 * 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 (version 2 of the License).
 *
 *
 * 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  02111-1307  USA
 */

#ifndef AUTH_H
#define AUTH_H

#include <unistd.h>
#include <string.h>

class AuthMethod {
public:
        enum AuthRes {
                AUTH_UNKNOWN,
                AUTH_OK,
                AUTH_FAIL,
                AUTH_ERR
        };

public:
        virtual ~AuthMethod(void) {};

        virtual AuthMethod::AuthRes Auth(const char *user, const char *cred) const = 0;
        virtual AuthMethod::AuthRes Auth(int sock) const = 0;
};

/* NoAuth - begin */

/* always OK */

class NoAuth : public AuthMethod {
public:
        AuthMethod::AuthRes Auth(const char * /* user */ , const char * /* cred */ ) const;
        AuthMethod::AuthRes Auth(int sock) const;
};

/* NoAuth - end */


/* PasswordAuth - begin */

/* simple password comparison */

#ifdef HAVE_CRYPT

class PasswordAuth: public AuthMethod {
protected:
        char User[33];
        char Cred[33];

public:
        PasswordAuth(const char *u, const char *c, const char *salt_format = NULL);

        AuthMethod::AuthRes Auth(const char *user, const char *cred) const;
        AuthMethod::AuthRes Auth(int sock) const;
};

#endif /* HAVE_CRYPT */

/* PasswordAuth - end */


/* PAM_Auth - begin */

/* pam authentication */

#ifdef USE_PAM

class PAM_Auth: public AuthMethod {
protected:
        char* User;

public:
        PAM_Auth(const char *u = NULL);

        AuthMethod::AuthRes Auth(const char *user, const char *cred) const;
        AuthMethod::AuthRes Auth(int sock) const;
};

#endif /* USE_PAM */

/* PAM_Auth - end */

/* SASL2_Auth - begin */

/* SASL2 authentication (obsoletes everything else) */

#ifdef HAVE_SASL2

#if defined(HAVE_SASL_SASL_H)
#include <sasl/sasl.h>
#elif defined(HAVE_SASL_H)
#include <sasl.h>
#endif /* HAVE_SASL_SASL_H || HAVE_SASL_H */
#include "mbsasl.h"

class SASL2_Auth: public AuthMethod {
protected:
        mutable mbdyn_sasl_t    mbdyn_sasl;

public:
        SASL2_Auth(const mbdyn_sasl_t *ms);

        AuthMethod::AuthRes Auth(const char *user, const char *cred) const;
        AuthMethod::AuthRes Auth(int sock) const;
};

#endif /* HAVE_SASL2 */

/* PAM_Auth - end */

class DataManager;
class MBDynParser;

extern AuthMethod* ReadAuthMethod(const DataManager* pDM, MBDynParser& HP);

#endif /* AUTH_H */