File: matcher-hash.h

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/*
 *  Copyright (C) 2010 Sourcefire, Inc.
 *
 *  Authors: aCaB
 *
 *  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_HASH_H
#define __MATCHER_HASH_H

#if HAVE_CONFIG_H
#include "clamav-config.h"
#endif

#include "cltypes.h"
#include "hashtab.h"

enum CLI_HASH_TYPE {
    CLI_HASH_MD5 = 0,
    CLI_HASH_SHA1,
    CLI_HASH_SHA256,

    /* new hash types go above this line */
    CLI_HASH_AVAIL_TYPES
};

#define CLI_HASHLEN_MD5 16
#define CLI_HASHLEN_SHA1 20
#define CLI_HASHLEN_SHA256 32
#define CLI_HASHLEN_MAX 32

struct cli_sz_hash {
    uint8_t *hash_array;
    const char **virusnames;
    uint32_t items;
};

struct cli_hash_patt {
    struct cli_htu32 sizehashes[CLI_HASH_AVAIL_TYPES];
};

struct cli_hash_wild {
    struct cli_sz_hash hashes[CLI_HASH_AVAIL_TYPES];
};

int hm_addhash_str(struct cli_matcher *root, const char *strhash, uint32_t size, const char *virusname);
int hm_addhash_bin(struct cli_matcher *root, const void *binhash, enum CLI_HASH_TYPE type, uint32_t size, const char *virusname);
void hm_flush(struct cli_matcher *root);
int cli_hm_scan(const unsigned char *digest, uint32_t size, const char **virname, const struct cli_matcher *root, enum CLI_HASH_TYPE type);
int cli_hm_scan_wild(const unsigned char *digest, const char **virname, const struct cli_matcher *root, enum CLI_HASH_TYPE type);
int cli_hm_have_size(const struct cli_matcher *root, enum CLI_HASH_TYPE type, uint32_t size);
int cli_hm_have_wild(const struct cli_matcher *root, enum CLI_HASH_TYPE type);
void hm_free(struct cli_matcher *root);

#endif