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/***************************************************************************
$RCSfile$
-------------------
cvs : $Id$
begin : Mon Nov 17 2003
copyright : (C) 2003 by Martin Preuss
email : martin@libchipcard.de

***************************************************************************
* *
* This library 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 2.1 of the License, or (at your option) any later version. *
* *
* This library 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 library; if not, write to the Free Software *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
* MA 02111-1307 USA *
* *
***************************************************************************/

/** @file keymanager.h
*
* @brief This file contains the description of the basic key manager
*
* A key manager is used to store, retrieve, add and delete keys.
* It is used by IPC functions to manage the keys to be used.
* This is just a base "class", it really doesn't do anything.
* However, inheriting "classes" can provide services for reading keys
* from files, or simply hold a list of keys which is forgotten after the
* program terminates.
*/


#ifndef GWENHYWFAR_KEYMANAGER_H
#define GWENHYWFAR_KEYMANAGER_H


#include <gwenhyfwar/crypt.h>
#include <gwenhyfwar/keyspec.h>

typedef struct GWEN_KEYMANAGER GWEN_KEYMANAGER;


typedef const GWEN_CRYPTKEY*
(*GWEN_KEYMANAGER_GETKEYFN)(GWEN_KEYMANAGER *km,
const GWEN_KEYSPEC *ks);
typedef int (*GWEN_KEYMANAGER_ADDKEYFN)(GWEN_KEYMANAGER *km,
const GWEN_CRYPTKEY *key);
typedef int (*GWEN_KEYMANAGER_DELKEYFN)(GWEN_KEYMANAGER *km,
const GWEN_CRYPTKEY *key);
typedef void (*GWEN_KEYMANAGER_FREEDATAFN)(GWEN_KEYMANAGER *km);



void GWEN_KeyManager_free(GWEN_KEYMANAGER *km);


const GWEN_CRYPTKEY *GWEN_KeyManager_GetKey(GWEN_KEYMANAGER *km,
const GWEN_KEYSPEC *ks);
int GWEN_KeyManager_AddKey(GWEN_KEYMANAGER *km,
const GWEN_CRYPTKEY *key);
int GWEN_KeyManager_DeleteKey(GWEN_KEYMANAGER *km,
const GWEN_CRYPTKEY *key);


/** @name Functions for Inheritors
*
* These functiuons are not to be used by the application but by
* inheritors (like "protected" in C++)
*/
/*@{*/
GWEN_KEYMANAGER *GWEN_KeyManager_new();

void GWEN_KeyManager_SetGetKeyFn(GWEN_KEYMANAGER *km,
GWEN_KEYMANAGER_GETKEYFN fn);
void GWEN_KeyManager_SetAddKeyFn(GWEN_KEYMANAGER *km,
GWEN_KEYMANAGER_ADDKEYFN fn);
void GWEN_KeyManager_SetDelKeyFn(GWEN_KEYMANAGER *km,
GWEN_KEYMANAGER_DELKEYFN fn);
void GWEN_KeyManager_SetFreeDataFn(GWEN_KEYMANAGER *km,
GWEN_KEYMANAGER_FREEDATAFN fn);
void GWEN_KeyManager_SetData(GWEN_KEYMANAGER *km,
void *data);
void *GWEN_KeyManager_GetData(GWEN_KEYMANAGER *km);

/*@}*/


#endif




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