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