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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 DFILTER_INT_H
#define DFILTER_INT_H
#include "dfilter.h"
#include "syntax-tree.h"
#include <epan/proto.h>
#include <stdio.h>
/* Passed back to user */
struct epan_dfilter {
GPtrArray *insns;
GPtrArray *consts;
guint num_registers;
guint max_registers;
GList **registers;
gboolean *attempted_load;
gboolean *owns_memory;
int *interesting_fields;
int num_interesting_fields;
GPtrArray *deprecated;
};
typedef struct {
/* Syntax Tree stuff */
stnode_t *st_root;
gboolean syntax_error;
gchar *error_message;
GPtrArray *insns;
GPtrArray *consts;
GHashTable *loaded_fields;
GHashTable *interesting_fields;
int next_insn_id;
int next_const_id;
int next_register;
int first_constant; /* first register used as a constant */
GPtrArray *deprecated;
} dfwork_t;
/*
* State kept by the scanner.
*/
typedef struct {
dfwork_t *dfw;
GString* quoted_string;
gboolean raw_string;
gboolean in_set; /* true if parsing set elements for the membership operator */
GPtrArray *deprecated;
} df_scanner_state_t;
/* Constructor/Destructor prototypes for Lemon Parser */
void *DfilterAlloc(void* (*)(gsize));
void DfilterFree(void*, void (*)(void *));
void Dfilter(void*, int, stnode_t*, dfwork_t*);
/* Scanner's lval */
extern stnode_t *df_lval;
/* Return value for error in scanner. */
#define SCAN_FAILED -1 /* not 0, as that means end-of-input */
/* Set dfw->error_message */
void
dfilter_fail(dfwork_t *dfw, const char *format, ...) G_GNUC_PRINTF(2, 3);
void
dfilter_parse_fail(dfwork_t *dfw, const char *format, ...) G_GNUC_PRINTF(2, 3);
void
add_deprecated_token(GPtrArray *deprecated, const char *token);
void
free_deprecated(GPtrArray *deprecated);
void
DfilterTrace(FILE *TraceFILE, char *zTracePrompt);
stnode_t *
dfilter_new_function(dfwork_t *dfw, const char *name);
gboolean
dfilter_str_to_gint32(dfwork_t *dfw, const char *s, gint32* pint);
const char *tokenstr(int token);
#endif
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