/* scdaemon.h - Global definitions for the SCdaemon
 *	Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
 *
 * This file is part of GnuPG.
 *
 * GnuPG 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * GnuPG 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 SCDAEMON_H
#define SCDAEMON_H

#ifdef GPG_ERR_SOURCE_DEFAULT
#error GPG_ERR_SOURCE_DEFAULT already defined
#endif
#define GPG_ERR_SOURCE_DEFAULT  GPG_ERR_SOURCE_SCD
#include <gpg-error.h>
#include <errno.h>

#include <time.h>
#include <gcrypt.h>
#include "../common/util.h"
#include "../common/errors.h"

/* Convenience funcion to be used instead of returning the old
   GNUPG_Out_Of_Core. */
static __inline__ gpg_error_t
out_of_core (void)
{
  return gpg_error (gpg_err_code_from_errno (errno));
}


#define MAX_DIGEST_LEN 24 

/* A large struct name "opt" to keep global flags */
struct {
  unsigned int debug; /* debug flags (DBG_foo_VALUE) */
  int debug_sc;     /* OpenSC debug level */
  int verbose;      /* verbosity level */
  int quiet;        /* be as quiet as possible */
  int dry_run;      /* don't change any persistent data */
  int batch;        /* batch mode */
  const char *homedir; /* configuration directory name */
} opt;


#define DBG_COMMAND_VALUE 1	/* debug commands i/o */
#define DBG_MPI_VALUE	  2	/* debug mpi details */
#define DBG_CRYPTO_VALUE  4	/* debug low level crypto */
#define DBG_MEMORY_VALUE  32	/* debug memory allocation stuff */
#define DBG_CACHE_VALUE   64	/* debug the caching */
#define DBG_MEMSTAT_VALUE 128	/* show memory statistics */
#define DBG_HASHING_VALUE 512	/* debug hashing operations */
#define DBG_ASSUAN_VALUE 1024   
#define DBG_CARD_IO_VALUE 2048

#define DBG_COMMAND (opt.debug & DBG_COMMAND_VALUE)
#define DBG_CRYPTO  (opt.debug & DBG_CRYPTO_VALUE)
#define DBG_MEMORY  (opt.debug & DBG_MEMORY_VALUE)
#define DBG_CACHE   (opt.debug & DBG_CACHE_VALUE)
#define DBG_HASHING (opt.debug & DBG_HASHING_VALUE)
#define DBG_ASSUAN  (opt.debug & DBG_ASSUAN_VALUE)
#define DBG_CARD_IO (opt.debug & DBG_CARD_IO_VALUE)

struct server_local_s;
struct card_ctx_s;
struct app_ctx_s;

struct server_control_s {
  struct server_local_s *server_local;
  struct card_ctx_s *card_ctx;
  struct app_ctx_s *app_ctx;
  struct {
    unsigned char *value;  
    int valuelen;
  } in_data;  /* helper to store the value we are going to sign */

};

typedef struct server_control_s *CTRL;
typedef struct card_ctx_s *CARD;
typedef struct app_ctx_s *APP;

/*-- scdaemon.c --*/
void scd_exit (int rc);
void scd_init_default_ctrl (CTRL ctrl);

/*-- command.c --*/
void scd_command_handler (int);
void send_status_info (CTRL ctrl, const char *keyword, ...);

/*-- card.c --*/
int card_open (CARD *rcard);
void card_close (CARD card);
int card_get_serial_and_stamp (CARD card, char **serial, time_t *stamp);
int card_enum_keypairs (CARD card, int idx,
                        unsigned char *keygrip,
                        char **keyid);
int card_enum_certs (CARD card, int idx, char **certid, int *certtype);
int card_read_cert (CARD card, const char *certidstr,
                    unsigned char **cert, size_t *ncert);
int card_sign (CARD card,
               const char *keyidstr, int hashalgo,
               int (pincb)(void*, const char *, char **),
               void *pincb_arg,
               const void *indata, size_t indatalen,
               unsigned char **outdata, size_t *outdatalen );
int card_decipher (CARD card, const char *keyidstr,
                   int (pincb)(void*, const char *, char **),
                   void *pincb_arg,
                   const void *indata, size_t indatalen,
                   unsigned char **outdata, size_t *outdatalen);


#endif /*SCDAEMON_H*/