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dfvm.h

/*
 * $Id: dfvm.h 23659 2007-11-28 22:44:37Z wmeier $
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 2001 Gerald Combs
 *
 * 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 DFVM_H
#define DFVM_H

#include <stdio.h>
#include <epan/proto.h>
#include "dfilter-int.h"
#include "syntax-tree.h"
#include "drange.h"
#include "dfunctions.h"

typedef enum {
      EMPTY,
      FVALUE,
      HFINFO,
      INSN_NUMBER,
      REGISTER,
      INTEGER,
      DRANGE,
      FUNCTION_DEF
} dfvm_value_type_t;

00044 typedef struct {
      dfvm_value_type_t type;

      union {
            fvalue_t          *fvalue;
            guint32                 numeric;
            drange                  *drange;
            header_field_info *hfinfo;
        df_func_def_t   *funcdef;
      } value;

} dfvm_value_t;


typedef enum {

      IF_TRUE_GOTO,
      IF_FALSE_GOTO,
      CHECK_EXISTS,
      NOT,
      RETURN,
      READ_TREE,
      PUT_FVALUE,
      ANY_EQ,
      ANY_NE,
      ANY_GT,
      ANY_GE,
      ANY_LT,
      ANY_LE,
      ANY_BITWISE_AND,
      ANY_CONTAINS,
      ANY_MATCHES,
      MK_RANGE,
    CALL_FUNCTION

} dfvm_opcode_t;

00081 typedef struct {
      int         id;
      dfvm_opcode_t     op;
      dfvm_value_t      *arg1;
      dfvm_value_t      *arg2;
      dfvm_value_t      *arg3;
      dfvm_value_t      *arg4;
} dfvm_insn_t;

dfvm_insn_t*
dfvm_insn_new(dfvm_opcode_t op);

void
dfvm_insn_free(dfvm_insn_t *insn);

dfvm_value_t*
dfvm_value_new(dfvm_value_type_t type);

void
dfvm_dump(FILE *f, GPtrArray *insns);

gboolean
dfvm_apply(dfilter_t *df, proto_tree *tree);

void
dfvm_init_const(dfilter_t *df);

#endif

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