forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
if set, and if the program isn't running with additional privileges, it'll treat the directory in which the program is found as the data directory. If, on Windows, the version-number subdirectory of {data directory}\plugins doesn't exist (which is assumed to mean that the program is being run from the build directory), or if, on UN*X, WIRESHARK_RUN_FROM_BUILD_DIRECTORY is set, the plugin directory is the "plugins" subdirectory of the data directory, and all subdirectories of that directory are scanned for plugins, as the "plugins" subdirectory of the build directory contains subdirectories for the plugins; this means that if we're running from the build directory, we'll find the plugins we built in the build tree. When generating the wireshark-filter man page, run tshark with WIRESHARK_RUN_FROM_BUILD_DIRECTORY set, so it uses the plugins from the build to generate the list of filters. svn path=/trunk/; revision=20261
194 lines
4.9 KiB
C
194 lines
4.9 KiB
C
/* dftest.c.c
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*
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* $Id$
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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 1998 Gerald Combs
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*
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* Shows display filter byte-code, for debugging dfilter routines.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <locale.h>
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#include <string.h>
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#include <errno.h>
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#ifdef NEED_STRERROR_H
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#include "strerror.h"
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#endif
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#include <glib.h>
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#include <epan/epan.h>
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#include <epan/timestamp.h>
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#include <epan/plugins.h>
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#include <epan/filesystem.h>
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#include <epan/privileges.h>
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#include <epan/prefs.h>
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#include "util.h"
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#include "epan/dfilter/dfilter.h"
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#include "register.h"
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packet_info pi;
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static void failure_message(const char *msg_format, va_list ap);
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static void open_failure_message(const char *filename, int err,
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gboolean for_writing);
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static void read_failure_message(const char *filename, int err);
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int
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main(int argc, char **argv)
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{
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char *text;
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char *gpf_path, *pf_path;
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int gpf_open_errno, gpf_read_errno;
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int pf_open_errno, pf_read_errno;
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e_prefs *prefs;
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dfilter_t *df;
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/*
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* Attempt to get the pathname of the executable file.
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*/
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init_progfile_dir(argv[0]);
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/*
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* Get credential information for later use.
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*/
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get_credential_info();
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/*
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* Now attempt to get the pathname of the plugins.
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*/
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init_plugin_dir();
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timestamp_set_type(TS_RELATIVE);
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/* Register all dissectors; we must do this before checking for the
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"-g" flag, as the "-g" flag dumps a list of fields registered
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by the dissectors, and we must do it before we read the preferences,
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in case any dissectors register preferences. */
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epan_init(register_all_protocols,
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register_all_protocol_handoffs,
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failure_message, open_failure_message, read_failure_message);
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/* now register the preferences for any non-dissector modules.
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we must do that before we read the preferences as well. */
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prefs_register_modules();
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/* set the c-language locale to the native environment. */
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setlocale(LC_ALL, "");
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prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
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&pf_open_errno, &pf_read_errno, &pf_path);
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if (gpf_path != NULL) {
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if (gpf_open_errno != 0) {
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fprintf(stderr,
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"can't open global preferences file \"%s\": %s.\n",
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pf_path, strerror(gpf_open_errno));
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}
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if (gpf_read_errno != 0) {
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fprintf(stderr,
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"I/O error reading global preferences file \"%s\": %s.\n",
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pf_path, strerror(gpf_read_errno));
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}
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}
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if (pf_path != NULL) {
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if (pf_open_errno != 0) {
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fprintf(stderr,
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"can't open your preferences file \"%s\": %s.\n",
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pf_path, strerror(pf_open_errno));
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}
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if (pf_read_errno != 0) {
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fprintf(stderr,
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"I/O error reading your preferences file \"%s\": %s.\n",
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pf_path, strerror(pf_read_errno));
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}
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}
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/* notify all registered modules that have had any of their preferences
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changed either from one of the preferences file or from the command
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line that its preferences have changed. */
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prefs_apply_all();
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/* Check for filter on command line */
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if (argc <= 1) {
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fprintf(stderr, "Usage: dftest <filter>\n");
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exit(1);
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}
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/* Get filter text */
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text = get_args_as_string(argc, argv, 1);
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printf("Filter: \"%s\"\n", text);
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/* Compile it */
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if (!dfilter_compile(text, &df)) {
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fprintf(stderr, "dftest: %s\n", dfilter_error_msg);
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epan_cleanup();
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exit(2);
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}
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printf("dfilter ptr = 0x%08x\n", GPOINTER_TO_INT(df));
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printf("\n\n");
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if (df == NULL)
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printf("Filter is empty\n");
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else
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dfilter_dump(df);
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epan_cleanup();
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exit(0);
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}
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/*
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* General errors are reported with an console message in "dftest".
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*/
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static void
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failure_message(const char *msg_format, va_list ap)
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{
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fprintf(stderr, "dftest: ");
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vfprintf(stderr, msg_format, ap);
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fprintf(stderr, "\n");
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}
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/*
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* Open/create errors are reported with an console message in "dftest".
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*/
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static void
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open_failure_message(const char *filename, int err, gboolean for_writing)
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{
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fprintf(stderr, "dftest: ");
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fprintf(stderr, file_open_error_message(err, for_writing), filename);
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fprintf(stderr, "\n");
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}
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/*
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* Read errors are reported with an console message in "dftest".
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*/
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static void
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read_failure_message(const char *filename, int err)
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{
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fprintf(stderr, "dftest: An error occurred while reading from the file \"%s\": %s.\n",
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filename, strerror(err));
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}
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