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