/*
 * internal.h: Internal definitions for libopensc
 *
 * Copyright (C) 2001, 2002  Juha Yrjölä <juha.yrjola@iki.fi>
 *
 * 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
 */

#ifndef _SC_INTERNAL_H
#define _SC_INTERNAL_H

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#ifdef  __cplusplus
extern "C" {
#endif

#include "opensc.h"
#include <assert.h>

#define SC_FILE_MAGIC			0x14426950
#define SC_CARD_MAGIC			0x27182818
#define SC_CTX_MAGIC			0x0A550335

struct sc_atr_table {
	const u8 *atr;
	size_t atr_len;
	int id;
};

/* Internal use only */
int sc_check_sw(struct sc_card *card, int sw1, int sw2);
size_t _sc_count_bit_string_size(const void * buf, size_t bufsize);

int _sc_add_reader(struct sc_context *ctx, struct sc_reader *reader);
int _sc_parse_atr(struct sc_context *ctx, struct sc_slot_info *slot);
struct sc_slot_info * _sc_get_slot_info(struct sc_reader *reader, int slot_id);

/* Add an ATR to the card driver's struct sc_atr_table */
int _sc_add_atr(struct sc_card_driver *, const u8 *, size_t, int);

/* Returns an index number if a match was found, -1 otherwise. table has to
 * be null terminated. */
int _sc_match_atr(struct sc_card *card, struct sc_atr_table *table, int *id_out);

int _sc_card_add_algorithm(struct sc_card *card, const struct sc_algorithm_info *info);
int _sc_card_add_rsa_alg(struct sc_card *card, unsigned int key_length,
			 unsigned long flags, unsigned long exponent);
struct sc_algorithm_info * _sc_card_find_rsa_alg(struct sc_card *card,
						 unsigned int key_length);

int sc_module_open(struct sc_context *ctx, void **mod_handle, const char *filename);
int sc_module_close(struct sc_context *ctx, void *mod_handle);
int sc_module_get_address(struct sc_context *ctx, void *mod_handle, void **sym_address, const char *sym_name);

int sc_asn1_read_tag(const u8 ** buf, size_t buflen, unsigned int *cla_out,
		     unsigned int *tag_out, size_t *taglen);

/* portability.c
 * Note: struct sc_mutex is a dummy used for type safety.
 */
struct sc_mutex *sc_mutex_new(void);
void sc_mutex_lock(struct sc_mutex *);
void sc_mutex_unlock(struct sc_mutex *);
void sc_mutex_free(struct sc_mutex *);

#ifdef  __cplusplus
}
#endif

#endif