/* aide, Advanced Intrusion Detection Environment

 *

 * Copyright (C) 2000-2002,2005,2006 Rami Lehti,Pablo Virolainen,

 * Richard van den Berg

 * $Header$

 *

 * This program 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.

 *

 * This program 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 _MD_H_INCLUDED

#define _MD_H_INCLUDED

#include "aide.h"

/*

  This should come from configure-script.

 */

#include "db_config.h"

#ifdef WITH_MHASH

#include <mhash.h>

#ifdef HAVE_MHASH_WHIRLPOOL

# define HASH_MHASH_COUNT MHASH_WHIRLPOOL /* WHIRLPOOL == 22 on 2006-10-11 */

#else

# define HASH_MHASH_COUNT MHASH_RIPEMD320

#endif

#define MHASH_RMD160 MHASH_RIPEMD160

#define MHASH_HAVAL MHASH_HAVAL256

#endif

#ifdef WITH_GCRYPT

#include <gcrypt.h>

#define HASH_GCRYPT_COUNT GCRY_MD_CRC32

#ifndef WITH_MHASH

#define HASH_USE_GCRYPT (DB_MD5|DB_SHA1|DB_RMD160|DB_TIGER|DB_CRC32|\

                         DB_HAVAL|DB_CRC32|DB_SHA256|DB_SHA512)

#endif

#endif

/*

  Lengths. Hope I got there right :)

 */

#define HASH_MD5_LEN 16

#define HASH_SHA1_LEN 20

#define HASH_RMD160_LEN 20

#define HASH_TIGER_LEN 24

#define HASH_GOST_LEN 32

#define HASH_HAVAL224_LEN 28

#define HASH_HAVAL192_LEN 24

#define HASH_HAVAL160_LEN 20

#define HASH_HAVAL128_LEN 16

#define HASH_HAVAL256_LEN 32

#define HASH_TIGER128_LEN 16

#define HASH_TIGER160_LEN 20

#define HASH_MD4_LEN 16

#define HASH_SHA256_LEN 32

#define HASH_SHA512_LEN 64

#define HASH_WHIRLPOOL_LEN 64

#define HASH_ADLER32_LEN 4

#define HASH_CRC32B_LEN 4

#define HASH_CRC32_LEN 4

/*

  What we use from what library?

 */

#ifdef WITH_MHASH

#define HASH_USE_MHASH (DB_MD5|DB_SHA1|DB_RMD160|DB_TIGER|DB_CRC32|\

                        DB_HAVAL|DB_GOST|DB_CRC32|\

                        DB_SHA256|DB_SHA512|DB_WHIRLPOOL)

#define HASH_USE_GCRYPT (0)

#endif

/*

  This struct hold's internal data needed for md-calls.

 */

typedef struct md_container {

  /*

    final hashes. There might be more these than AIDE currently supports,

    but that should be an easy task.

  */

  char crc32[HASH_CRC32_LEN];

  char md5[HASH_MD5_LEN];

  char sha1[HASH_SHA1_LEN];

  char haval[HASH_HAVAL256_LEN];

  char rmd160[HASH_RMD160_LEN];

  char tiger[HASH_TIGER_LEN];

  char gost[HASH_GOST_LEN];

  char crc32b[HASH_CRC32B_LEN];

  char haval224[HASH_HAVAL224_LEN];

  char haval192[HASH_HAVAL192_LEN];

  char haval160[HASH_HAVAL160_LEN];

  char haval128[HASH_HAVAL128_LEN];

  char tiger128[HASH_TIGER128_LEN];

  char tiger160[HASH_TIGER160_LEN];

  char md4[HASH_MD4_LEN];

  char sha256[HASH_SHA256_LEN];

  char sha512[HASH_SHA512_LEN];

  char adler32[HASH_ADLER32_LEN];

  char whirlpool[HASH_WHIRLPOOL_LEN];

  /* 

     Attr which are to be calculated.

  */

  DB_ATTR_TYPE calc_attr; 

  /*

    Attr which are not (yet) to be calculated.

    After init hold's hashes which are not calculated :)

  */

  DB_ATTR_TYPE todo_attr;

  /*

    Variables needed to cope with the library.

   */

#ifdef WITH_MHASH

  MHASH mhash_mdh[HASH_MHASH_COUNT+1];

#endif

#ifdef WITH_GCRYPT

  gcry_md_hd_t mdh;

#endif

} md_container;

int init_md(struct md_container*);

int update_md(struct md_container*,void*,ssize_t);

int close_md(struct md_container*);

void md2line(struct md_container*,struct db_line*);

DB_ATTR_TYPE get_available_crypto();

#endif /*_MD_H_INCLUDED*/