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/* dftest.c
* Shows display filter byte-code, for debugging dfilter routines.
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <locale.h>
#include <string.h>
#include <errno.h>
#include <glib.h>
#include <epan/epan.h>
#include <epan/timestamp.h>
#include <epan/prefs.h>
#include <epan/dfilter/dfilter.h>
#ifdef HAVE_PLUGINS
#include <wsutil/plugins.h>
#endif
#include <wsutil/filesystem.h>
#include <wsutil/privileges.h>
#include <wsutil/report_message.h>
#include <wiretap/wtap.h>
#include "ui/util.h"
#include "ui/cmdarg_err.h"
#include "ui/failure_message.h"
static void dftest_cmdarg_err(const char *fmt, va_list ap);
static void dftest_cmdarg_err_cont(const char *fmt, va_list ap);
int
main(int argc, char **argv)
{
char *init_progfile_dir_error;
static const struct report_message_routines dftest_report_routines = {
failure_message,
failure_message,
open_failure_message,
read_failure_message,
write_failure_message,
cfile_open_failure_message,
cfile_dump_open_failure_message,
cfile_read_failure_message,
cfile_write_failure_message,
cfile_close_failure_message
};
char *text;
dfilter_t *df;
gchar *err_msg;
cmdarg_err_init(dftest_cmdarg_err, dftest_cmdarg_err_cont);
/*
* Get credential information for later use.
*/
init_process_policies();
/*
* Attempt to get the pathname of the directory containing the
* executable file.
*/
init_progfile_dir_error = init_progfile_dir(argv[0]);
if (init_progfile_dir_error != NULL) {
fprintf(stderr, "dftest: Can't get pathname of directory containing the dftest program: %s.\n",
init_progfile_dir_error);
g_free(init_progfile_dir_error);
}
init_report_message("dftest", &dftest_report_routines);
timestamp_set_type(TS_RELATIVE);
timestamp_set_seconds_type(TS_SECONDS_DEFAULT);
/*
* Libwiretap must be initialized before libwireshark is, so that
* dissection-time handlers for file-type-dependent blocks can
* register using the file type/subtype value for the file type.
*/
wtap_init(TRUE);
/* Register all dissectors; we must do this before checking for the
"-g" flag, as the "-g" flag dumps a list of fields registered
by the dissectors, and we must do it before we read the preferences,
in case any dissectors register preferences. */
if (!epan_init(NULL, NULL, FALSE))
return 2;
/*
* Set the C-language locale to the native environment and set the
* code page to UTF-8 on Windows.
*/
#ifdef _WIN32
setlocale(LC_ALL, ".UTF-8");
#else
setlocale(LC_ALL, "");
#endif
/* Load libwireshark settings from the current profile. */
epan_load_settings();
/* notify all registered modules that have had any of their preferences
changed either from one of the preferences file or from the command
line that its preferences have changed. */
prefs_apply_all();
/* Check for filter on command line */
if (argc <= 1) {
fprintf(stderr, "Usage: dftest <filter>\n");
exit(1);
}
/* Get filter text */
text = get_args_as_string(argc, argv, 1);
printf("Filter: \"%s\"\n", text);
/* Compile it */
if (!dfilter_compile(text, &df, &err_msg)) {
fprintf(stderr, "dftest: %s\n", err_msg);
g_free(err_msg);
epan_cleanup();
g_free(text);
exit(2);
}
printf("\n");
if (df == NULL)
printf("Filter is empty\n");
else
dfilter_dump(df);
dfilter_free(df);
epan_cleanup();
g_free(text);
exit(0);
}
/*
* Report an error in command-line arguments.
*/
static void
dftest_cmdarg_err(const char *fmt, va_list ap)
{
fprintf(stderr, "dftest: ");
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
}
/*
* Report additional information for an error in command-line arguments.
*/
static void
dftest_cmdarg_err_cont(const char *fmt, va_list ap)
{
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
}
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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