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/*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 2001 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef SYNTAX_TREE_H
#define SYNTAX_TREE_H
#include <stdio.h>
#include <inttypes.h>
#include <glib.h>
#include <wsutil/ws_assert.h>
#include <wsutil/wslog.h>
#include <epan/ftypes/ftypes.h>
#include "dfilter-loc.h"
/** @file
*/
typedef enum {
STTYPE_UNINITIALIZED,
STTYPE_TEST,
STTYPE_LITERAL,
STTYPE_REFERENCE,
STTYPE_STRING,
STTYPE_CHARCONST,
STTYPE_FIELD,
STTYPE_FVALUE,
STTYPE_SLICE,
STTYPE_FUNCTION,
STTYPE_SET,
STTYPE_PCRE,
STTYPE_ARITHMETIC,
STTYPE_NUM_TYPES
} sttype_id_t;
typedef gpointer (*STTypeNewFunc)(gpointer);
typedef gpointer (*STTypeDupFunc)(gconstpointer);
typedef void (*STTypeFreeFunc)(gpointer);
typedef char* (*STTypeToStrFunc)(gconstpointer, gboolean pretty);
/* Type information */
typedef struct {
sttype_id_t id;
const char *name;
STTypeNewFunc func_new;
STTypeFreeFunc func_free;
STTypeDupFunc func_dup;
STTypeToStrFunc func_tostr;
} sttype_t;
/* Lexical value is ambiguous (can be a protocol field or a literal). */
#define STFLAG_UNPARSED (1 << 0)
/** Node (type instance) information */
typedef struct {
uint32_t magic;
sttype_t *type;
gpointer data;
char *repr_token;
char *repr_display;
char *repr_debug;
df_loc_t location;
uint16_t flags;
} stnode_t;
typedef enum {
STNODE_OP_UNINITIALIZED,
STNODE_OP_NOT,
STNODE_OP_AND,
STNODE_OP_OR,
STNODE_OP_ALL_EQ,
STNODE_OP_ANY_EQ,
STNODE_OP_ALL_NE,
STNODE_OP_ANY_NE,
STNODE_OP_GT,
STNODE_OP_GE,
STNODE_OP_LT,
STNODE_OP_LE,
STNODE_OP_CONTAINS,
STNODE_OP_MATCHES,
STNODE_OP_IN,
STNODE_OP_BITWISE_AND,
STNODE_OP_UNARY_MINUS,
STNODE_OP_ADD,
STNODE_OP_SUBTRACT,
STNODE_OP_MULTIPLY,
STNODE_OP_DIVIDE,
STNODE_OP_MODULO,
} stnode_op_t;
typedef enum {
STNODE_MATCH_DEF,
STNODE_MATCH_ANY,
STNODE_MATCH_ALL,
} stmatch_t;
/* These are the sttype_t registration function prototypes. */
void sttype_register_field(void);
void sttype_register_function(void);
void sttype_register_pointer(void);
void sttype_register_set(void);
void sttype_register_slice(void);
void sttype_register_string(void);
void sttype_register_opers(void);
void
sttype_init(void);
void
sttype_cleanup(void);
void
sttype_register(sttype_t *type);
stnode_t*
stnode_new(sttype_id_t type_id, gpointer data, char *token, df_loc_t loc);
stnode_t*
stnode_new_empty(sttype_id_t type_id);
stnode_t*
stnode_dup(const stnode_t *org);
void
stnode_clear(stnode_t *node);
void
stnode_init(stnode_t *node, sttype_id_t type_id, gpointer data, char *token, df_loc_t loc);
void
stnode_replace(stnode_t *node, sttype_id_t type_id, gpointer data);
void
stnode_free(stnode_t *node);
const char*
stnode_type_name(stnode_t *node);
sttype_id_t
stnode_type_id(stnode_t *node);
gpointer
stnode_data(stnode_t *node);
GString *
stnode_string(stnode_t *node);
gpointer
stnode_steal_data(stnode_t *node);
const char *
stnode_token(stnode_t *node);
df_loc_t
stnode_location(stnode_t *node);
void
stnode_set_location(stnode_t *node, df_loc_t loc);
gboolean
stnode_get_flags(stnode_t *node, uint16_t flags);
void
stnode_set_flags(stnode_t *node, uint16_t flags);
void
stnode_merge_location(stnode_t *dst, stnode_t *n1, stnode_t *n2);
const char *
stnode_tostr(stnode_t *node, gboolean pretty);
#define stnode_todisplay(node) stnode_tostr(node, TRUE)
#define stnode_todebug(node) stnode_tostr(node, FALSE)
void
log_node_full(enum ws_log_level level,
const char *file, int line, const char *func,
stnode_t *node, const char *msg);
void
log_test_full(enum ws_log_level level,
const char *file, int line, const char *func,
stnode_t *node, const char *msg);
#ifdef WS_DEBUG
#define log_node(node) \
log_node_full(LOG_LEVEL_NOISY, __FILE__, __LINE__, __func__, node, #node)
#define log_test(node) \
log_test_full(LOG_LEVEL_NOISY, __FILE__, __LINE__, __func__, node, #node)
#define LOG_NODE(node) \
do { \
if (stnode_type_id(node) == STTYPE_TEST) \
log_test(node); \
else \
log_node(node); \
} while (0)
#else
#define log_node(node) (void)0
#define log_test(node) (void)0
#define LOG_NODE(node) (void)0
#endif
char *
dump_syntax_tree_str(stnode_t *root);
void
log_syntax_tree(enum ws_log_level, stnode_t *root, const char *msg, char **cache_ptr);
#ifdef WS_DEBUG
#define ws_assert_magic(obj, mnum) \
do { \
ws_assert(obj); \
if ((obj)->magic != (mnum)) { \
ws_log_full(LOG_DOMAIN_DFILTER, LOG_LEVEL_ERROR, \
__FILE__, __LINE__, __func__, \
"Magic num is 0x%08"PRIx32", " \
"but should be 0x%08"PRIx32, \
(obj)->magic, (mnum)); \
} \
} while(0)
#else
#define ws_assert_magic(obj, mnum) (void)0
#endif
#endif /* SYNTAX_TREE_H */
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