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/** @file
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 2001 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef DFVM_H
#define DFVM_H
#include <wsutil/regex.h>
#include <epan/proto.h>
#include "dfilter-int.h"
#include "syntax-tree.h"
#include "drange.h"
#include "dfunctions.h"
#define ASSERT_DFVM_OP_NOT_REACHED(op) \
ws_error("Invalid dfvm opcode '%s'.", dfvm_opcode_tostr(op))
typedef enum {
EMPTY,
FVALUE,
HFINFO,
RAW_HFINFO,
INSN_NUMBER,
REGISTER,
INTEGER,
DRANGE,
FUNCTION_DEF,
PCRE,
} dfvm_value_type_t;
typedef struct {
dfvm_value_type_t type;
union {
GPtrArray *fvalue_p; /* Always has length == 1 */
uint32_t numeric;
drange_t *drange;
header_field_info *hfinfo;
df_func_def_t *funcdef;
ws_regex_t *pcre;
} value;
int ref_count;
} dfvm_value_t;
#define dfvm_value_get_fvalue(val) ((val)->value.fvalue_p->pdata[0])
typedef enum {
DFVM_NULL, /* Null/invalid opcode */
DFVM_IF_TRUE_GOTO,
DFVM_IF_FALSE_GOTO,
DFVM_CHECK_EXISTS,
DFVM_CHECK_EXISTS_R,
DFVM_NOT,
DFVM_RETURN,
DFVM_READ_TREE,
DFVM_READ_TREE_R,
DFVM_READ_REFERENCE,
DFVM_READ_REFERENCE_R,
DFVM_PUT_FVALUE,
DFVM_ALL_EQ,
DFVM_ANY_EQ,
DFVM_ALL_NE,
DFVM_ANY_NE,
DFVM_ALL_GT,
DFVM_ANY_GT,
DFVM_ALL_GE,
DFVM_ANY_GE,
DFVM_ALL_LT,
DFVM_ANY_LT,
DFVM_ALL_LE,
DFVM_ANY_LE,
DFVM_ALL_CONTAINS,
DFVM_ANY_CONTAINS,
DFVM_ALL_MATCHES,
DFVM_ANY_MATCHES,
DFVM_SET_ALL_IN,
DFVM_SET_ANY_IN,
DFVM_SET_ALL_NOT_IN,
DFVM_SET_ANY_NOT_IN,
DFVM_SET_ADD,
DFVM_SET_ADD_RANGE,
DFVM_SET_CLEAR,
DFVM_SLICE,
DFVM_LENGTH,
DFVM_VALUE_STRING,
DFVM_BITWISE_AND,
DFVM_UNARY_MINUS,
DFVM_ADD,
DFVM_SUBTRACT,
DFVM_MULTIPLY,
DFVM_DIVIDE,
DFVM_MODULO,
DFVM_CALL_FUNCTION,
DFVM_STACK_PUSH,
DFVM_STACK_POP,
DFVM_NOT_ALL_ZERO,
DFVM_NO_OP,
} dfvm_opcode_t;
const char *
dfvm_opcode_tostr(dfvm_opcode_t code);
typedef struct {
int id;
dfvm_opcode_t op;
dfvm_value_t *arg1;
dfvm_value_t *arg2;
dfvm_value_t *arg3;
} dfvm_insn_t;
dfvm_insn_t*
dfvm_insn_new(dfvm_opcode_t op);
void
dfvm_insn_replace_no_op(dfvm_insn_t *insn);
void
dfvm_insn_free(dfvm_insn_t *insn);
dfvm_value_t*
dfvm_value_new(dfvm_value_type_t type);
dfvm_value_t*
dfvm_value_ref(dfvm_value_t *v);
void
dfvm_value_unref(dfvm_value_t *v);
dfvm_value_t*
dfvm_value_new_fvalue(fvalue_t *fv);
dfvm_value_t*
dfvm_value_new_hfinfo(header_field_info *hfinfo, bool raw);
dfvm_value_t*
dfvm_value_new_register(int reg);
dfvm_value_t*
dfvm_value_new_drange(drange_t *dr);
dfvm_value_t*
dfvm_value_new_funcdef(df_func_def_t *funcdef);
dfvm_value_t*
dfvm_value_new_pcre(ws_regex_t *re);
dfvm_value_t*
dfvm_value_new_guint(unsigned num);
void
dfvm_dump(FILE *f, dfilter_t *df, uint16_t flags);
char *
dfvm_dump_str(wmem_allocator_t *alloc, dfilter_t *df, uint16_t flags);
bool
dfvm_apply(dfilter_t *df, proto_tree *tree);
bool
dfvm_apply_full(dfilter_t *df, proto_tree *tree, GPtrArray **fvals);
fvalue_t *
dfvm_get_raw_fvalue(const field_info *fi);
#endif
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