/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 * Copyright (C) 2010 by the Massachusetts Institute of Technology.
 * All rights reserved.
 *
 * Export of this software from the United States of America may
 *   require a specific license from the United States Government.
 *   It is the responsibility of any person or organization contemplating
 *   export to obtain such a license before exporting.
 *
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
 * distribute this software and its documentation for any purpose and
 * without fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation, and that
 * the name of M.I.T. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  Furthermore if you modify this software you must label
 * your software as modified software and not distribute it in such a
 * fashion that it might be confused with the original M.I.T. software.
 * M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 */

/* Generic declarations for dynamic modules implementing krb5 plugin
 * modules. */

#ifndef KRB5_PLUGIN_H
#define KRB5_PLUGIN_H

/* krb5_plugin_vtable is an abstract type.  Module initvt functions will cast
 * it to the appropriate interface-specific vtable type. */
typedef struct krb5_plugin_vtable_st *krb5_plugin_vtable;

/*
 * krb5_plugin_initvt_fn is the type of all module initvt functions.  Based on
 * the maj_ver argument, the initvt function should cast vtable to the
 * appropriate type and then fill it in.  If a vtable has been expanded,
 * min_ver indicates which version of the vtable is being filled in.
 */
typedef krb5_error_code
(*krb5_plugin_initvt_fn)(krb5_context context, int maj_ver, int min_ver,
                         krb5_plugin_vtable vtable);

#endif /* KRB5_PLUGIN_H */