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/*
 * $Source$
 * $Author$
 * $Id$
 *
 * Copyright 1990,1991 by the Massachusetts Institute of Technology.
 * All Rights Reserved.
 *
 * For copying and distribution information, please see the file
 * <krb5/copyright.h>.
 *
 * This file contains constant and function declarations used in the
 * file-based credential cache routines.
 */


#ifndef __KRB5_FILE_CCACHE__
#define __KRB5_FILE_CCACHE__

#include <krb5/krb5.h>
#include <krb5/ext-proto.h>
#include "scc-proto.h"
#include <krb5/sysincl.h>
#include <stdio.h>

#define KRB5_OK 0

#define KRB5_SCC_MAXLEN 100

#define KRB5_SCC_FVNO 0x0501		/* krb v5, scc v1 */

#define	SCC_OPEN_AND_ERASE	1
#define	SCC_OPEN_RDWR		2
#define	SCC_OPEN_RDONLY		3

#ifndef TKT_ROOT
#define TKT_ROOT "/tmp/tkt"
#endif

/* macros to make checking flags easier */
#define OPENCLOSE(id) (((krb5_scc_data *)id->data)->flags & KRB5_TC_OPENCLOSE)

typedef struct _krb5_scc_data {
     char *filename;
     FILE *file;
     krb5_flags flags;
     char stdio_buffer[BUFSIZ];
} krb5_scc_data;

/* An off_t can be arbitrarily complex */
typedef struct _krb5_scc_cursor {
    long pos;
} krb5_scc_cursor;

#define MAYBE_OPEN(ID, MODE) \
{									\
    if (OPENCLOSE (ID)) {						\
	krb5_error_code maybe_open_ret = krb5_scc_open_file (ID,MODE);	\
	if (maybe_open_ret) return maybe_open_ret; } }

#define MAYBE_CLOSE(ID, RET) \
{									\
    if (OPENCLOSE (ID)) {						\
	krb5_error_code maybe_close_ret = krb5_scc_close_file (ID);	\
	if (!(RET)) RET = maybe_close_ret; } }

/* DO NOT ADD ANYTHING AFTER THIS #endif */
#endif /* __KRB5_FILE_CCACHE__ */