127 lines
2.8 KiB
C
127 lines
2.8 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 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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typedef struct {
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const header_field_info *hfinfo;
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fvalue_t *value;
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int proto_layer_num;
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} df_reference_t;
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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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guint num_registers;
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GSList **registers;
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gboolean *attempted_load;
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GDestroyNotify *free_registers;
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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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char *expanded_text;
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GHashTable *references;
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char *syntax_tree_str;
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/* Used to pass arguments to functions. List of Lists (list of registers). */
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GSList *function_stack;
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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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GHashTable *loaded_fields;
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GHashTable *interesting_fields;
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int next_insn_id;
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int next_register;
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GPtrArray *deprecated;
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GHashTable *references; /* hfinfo -> pointer to array of references */
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char *expanded_text;
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stloc_t err_loc;
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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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stloc_t string_loc;
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stloc_t location;
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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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/* 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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void
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dfilter_vfail(dfwork_t *dfw, stloc_t *err_loc,
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const char *format, va_list args);
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void
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dfilter_fail(dfwork_t *dfw, stloc_t *err_loc,
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const char *format, ...) G_GNUC_PRINTF(3, 4);
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WS_NORETURN
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void
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dfilter_fail_throw(dfwork_t *dfw, stloc_t *err_loc,
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const char *format, ...) G_GNUC_PRINTF(3, 4);
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void
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dfw_set_error_location(dfwork_t *dfw, stloc_t *err_loc);
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void
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add_deprecated_token(dfwork_t *dfw, const char *token);
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void
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free_deprecated(GPtrArray *deprecated);
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void
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DfilterTrace(FILE *TraceFILE, char *zTracePrompt);
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header_field_info *
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dfilter_resolve_unparsed(dfwork_t *dfw, const char *name);
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WS_RETNONNULL fvalue_t*
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dfilter_fvalue_from_literal(dfwork_t *dfw, ftenum_t ftype, stnode_t *st,
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gboolean allow_partial_value, header_field_info *hfinfo_value_string);
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WS_RETNONNULL fvalue_t *
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dfilter_fvalue_from_string(dfwork_t *dfw, ftenum_t ftype, stnode_t *st,
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header_field_info *hfinfo_value_string);
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WS_RETNONNULL fvalue_t *
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dfilter_fvalue_from_charconst(dfwork_t *dfw, ftenum_t ftype, stnode_t *st);
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const char *tokenstr(int token);
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df_reference_t *
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reference_new(const field_info *finfo);
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void
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reference_free(df_reference_t *ref);
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#endif
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