/*

  *  Copyright (C) 2002 - 2007 Tomasz Kojm <tkojm@clamav.net>

  *
  *  This program is free software; you can redistribute it and/or modify

  *  it under the terms of the GNU General Public License version 2 as
  *  published by the Free Software Foundation.

  *
  *  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., 51 Franklin Street, Fifth Floor, Boston,
  *  MA 02110-1301, USA.

  */
 
 #ifndef __MATCHER_H
 #define __MATCHER_H
 

 #include <sys/types.h>
 

 #include "clamav.h"

 #include "filetypes.h"

 #include "others.h"

 #include "execs.h"
 #include "cltypes.h"

 #include "md5.h"

 #include "matcher-ac.h"
 #include "matcher-bm.h"
 
 #define CLI_MATCH_WILDCARD	0xff00
 #define CLI_MATCH_IGNORE	0x0100
 #define CLI_MATCH_ALTERNATIVE	0x0200
 #define CLI_MATCH_NIBBLE_HIGH	0x0300
 #define CLI_MATCH_NIBBLE_LOW	0x0400
 
 struct cli_matcher {
     uint16_t maxpatlen;
     uint8_t ac_only;
 
     /* Extended Boyer-Moore */
     int32_t *bm_shift;
     struct cli_bm_patt **bm_suffix;

     uint32_t *soff, soff_len; /* for PE section sigs */

 
     /* Extended Aho-Corasick */

     uint8_t ac_mindepth, ac_maxdepth;

     struct cli_ac_node *ac_root, **ac_nodetable;

     struct cli_ac_patt **ac_pattable;
     uint32_t ac_partsigs, ac_nodes, ac_patterns;

 };
 

 #define CL_TARGET_TABLE_SIZE 7

 struct cli_target_info {
     off_t fsize;
     struct cli_exe_info exeinfo;
     int8_t status; /* 0 == not initialised, 1 == initialised OK, -1 == error */
 };
 

 int cli_scanbuff(const unsigned char *buffer, uint32_t length, const char **virname, const struct cl_engine *engine, cli_file_t ftype);

 int cli_scandesc(int desc, cli_ctx *ctx, uint8_t otfrec, cli_file_t ftype, uint8_t ftonly, struct cli_matched_type **ftoffset);

 int cli_validatesig(cli_file_t ftype, const char *offstr, off_t fileoff, struct cli_target_info *info, int desc, const char *virname);

 struct cli_md5_node *cli_vermd5(const unsigned char *md5, const struct cl_engine *engine);
 

 off_t cli_caloff(const char *offstr, struct cli_target_info *info, int fd, cli_file_t ftype, int *ret, unsigned int *maxshift);

 #endif