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82 lines
2.7 KiB
82 lines
2.7 KiB
/*
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* Copyright (C) 2007 - 2008 Sourcefire, Inc.
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* Author: Tomasz Kojm <tkojm@clamav.net>
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*
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* Copyright (C) 2002 - 2007 Tomasz Kojm <tkojm@clamav.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#ifndef __MATCHER_AC_H
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#define __MATCHER_AC_H
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#include <sys/types.h>
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#include "filetypes.h"
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#include "cltypes.h"
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#define AC_DEFAULT_MIN_DEPTH 2
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#define AC_DEFAULT_MAX_DEPTH 3
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#define AC_DEFAULT_TRACKLEN 8
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#define AC_CH_MAXDIST 32
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extern uint8_t cli_ac_mindepth, cli_ac_maxdepth;
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struct cli_ac_data {
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int32_t ***offmatrix;
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uint32_t partsigs;
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};
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struct cli_ac_alt {
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unsigned char *str;
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struct cli_ac_alt *next;
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uint16_t len, num;
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uint8_t chmode;
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};
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struct cli_ac_patt {
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uint16_t *pattern, *prefix, length, prefix_length;
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uint32_t mindist, maxdist;
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uint32_t sigid;
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char *virname, *offset;
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uint16_t ch[2];
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uint16_t ch_mindist[2];
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uint16_t ch_maxdist[2];
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uint16_t parts, partno, alt, alt_pattern;
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struct cli_ac_alt **alttable;
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struct cli_ac_patt *next, *next_same;
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uint8_t depth;
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uint8_t target;
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uint16_t type;
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};
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struct cli_ac_node {
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struct cli_ac_patt *list;
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struct cli_ac_node **trans, *fail;
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uint8_t leaf, final;
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};
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#include "matcher.h"
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int cli_ac_addpatt(struct cli_matcher *root, struct cli_ac_patt *pattern);
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int cli_ac_initdata(struct cli_ac_data *data, uint32_t partsigs, uint8_t tracklen);
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void cli_ac_freedata(struct cli_ac_data *data);
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int cli_ac_scanbuff(const unsigned char *buffer, uint32_t length, const char **virname, const struct cli_matcher *root, struct cli_ac_data *mdata, uint8_t otfrec, uint32_t offset, cli_file_t ftype, int fd, struct cli_matched_type **ftoffset);
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int cli_ac_buildtrie(struct cli_matcher *root);
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int cli_ac_init(struct cli_matcher *root, uint8_t mindepth, uint8_t maxdepth);
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void cli_ac_free(struct cli_matcher *root);
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int cli_ac_addsig(struct cli_matcher *root, const char *virname, const char *hexsig, uint32_t sigid, uint16_t parts, uint16_t partno, uint16_t type, uint32_t mindist, uint32_t maxdist, const char *offset, uint8_t target);
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void cli_ac_setdepth(uint8_t mindepth, uint8_t maxdepth);
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#endif
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