Exemplo n.º 1
0
int
main(int argc, char **argv)
{
	char		*init_progfile_dir_error;
	char		*text;
	dfilter_t	*df;
	gchar		*err_msg;

	/*
	 * 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], main);
	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(failure_warning_message, failure_warning_message,
			    open_failure_message, read_failure_message,
			    write_failure_message);

	timestamp_set_type(TS_RELATIVE);
	timestamp_set_seconds_type(TS_SECONDS_DEFAULT);

#ifdef HAVE_PLUGINS
	/* Register all the plugin types we have. */
	epan_register_plugin_types(); /* Types known to libwireshark */

	/* Scan for plugins.  This does *not* call their registration routines;
	   that's done later. */
	scan_plugins(REPORT_LOAD_FAILURE);
#endif

	wtap_init();

	/* 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(register_all_protocols, register_all_protocol_handoffs,
	    NULL, NULL))
		return 2;

	/* set the c-language locale to the native environment. */
	setlocale(LC_ALL, "");

	/* 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();
		exit(2);
	}

	printf("\n");

	if (df == NULL)
		printf("Filter is empty\n");
	else
		dfilter_dump(df);

	dfilter_free(df);
	epan_cleanup();
	exit(0);
}
Exemplo n.º 2
0
int
main(int argc, char *argv[])
{
    GString *comp_info_str;
    GString *runtime_info_str;
    char *init_progfile_dir_error;
    wtap *wth = NULL;
    wtap_dumper *pdh = NULL;
    wtap_rec dump_rec;
    Buffer buf;
    int err;
    gchar *err_info;
    gint64 data_offset;
    const wtap_rec *rec;
    guint wrong_order_count = 0;
    gboolean write_output_regardless = TRUE;
    guint i;
    GArray                      *shb_hdrs = NULL;
    wtapng_iface_descriptions_t *idb_inf = NULL;
    GArray                      *nrb_hdrs = NULL;
    int                          ret = EXIT_SUCCESS;

    GPtrArray *frames;
    FrameRecord_t *prevFrame = NULL;

    int opt;
    static const struct option long_options[] = {
        {"help", no_argument, NULL, 'h'},
        {"version", no_argument, NULL, 'v'},
        {0, 0, 0, 0 }
    };
    int file_count;
    char *infile;
    const char *outfile;

    cmdarg_err_init(failure_warning_message, failure_message_cont);

    /* Get the compile-time version information string */
    comp_info_str = get_compiled_version_info(NULL, NULL);

    /* Get the run-time version information string */
    runtime_info_str = get_runtime_version_info(NULL);

    /* Add it to the information to be reported on a crash. */
    ws_add_crash_info("Reordercap (Wireshark) %s\n"
         "\n"
         "%s"
         "\n"
         "%s",
      get_ws_vcs_version_info(), comp_info_str->str, runtime_info_str->str);
    g_string_free(comp_info_str, TRUE);
    g_string_free(runtime_info_str, TRUE);

    /*
     * 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,
                "reordercap: Can't get pathname of directory containing the reordercap program: %s.\n",
                init_progfile_dir_error);
        g_free(init_progfile_dir_error);
    }

    init_report_message(failure_warning_message, failure_warning_message,
                        NULL, NULL, NULL);

    wtap_init(TRUE);

    /* Process the options first */
    while ((opt = getopt_long(argc, argv, "hnv", long_options, NULL)) != -1) {
        switch (opt) {
            case 'n':
                write_output_regardless = FALSE;
                break;
            case 'h':
                printf("Reordercap (Wireshark) %s\n"
                       "Reorder timestamps of input file frames into output file.\n"
                       "See https://www.wireshark.org for more information.\n",
                       get_ws_vcs_version_info());
                print_usage(stdout);
                goto clean_exit;
            case 'v':
                comp_info_str = get_compiled_version_info(NULL, NULL);
                runtime_info_str = get_runtime_version_info(NULL);
                show_version("Reordercap (Wireshark)", comp_info_str, runtime_info_str);
                g_string_free(comp_info_str, TRUE);
                g_string_free(runtime_info_str, TRUE);
                goto clean_exit;
            case '?':
                print_usage(stderr);
                ret = INVALID_OPTION;
                goto clean_exit;
        }
    }

    /* Remaining args are file names */
    file_count = argc - optind;
    if (file_count == 2) {
        infile  = argv[optind];
        outfile = argv[optind+1];
    }
    else {
        print_usage(stderr);
        ret = INVALID_OPTION;
        goto clean_exit;
    }

    /* Open infile */
    /* TODO: if reordercap is ever changed to give the user a choice of which
       open_routine reader to use, then the following needs to change. */
    wth = wtap_open_offline(infile, WTAP_TYPE_AUTO, &err, &err_info, TRUE);
    if (wth == NULL) {
        cfile_open_failure_message("reordercap", infile, err, err_info);
        ret = OPEN_ERROR;
        goto clean_exit;
    }
    DEBUG_PRINT("file_type_subtype is %d\n", wtap_file_type_subtype(wth));

    shb_hdrs = wtap_file_get_shb_for_new_file(wth);
    idb_inf = wtap_file_get_idb_info(wth);
    nrb_hdrs = wtap_file_get_nrb_for_new_file(wth);

    /* Open outfile (same filetype/encap as input file) */
    if (strcmp(outfile, "-") == 0) {
      pdh = wtap_dump_open_stdout_ng(wtap_file_type_subtype(wth), wtap_file_encap(wth),
                                     wtap_snapshot_length(wth), FALSE, shb_hdrs, idb_inf, nrb_hdrs, &err);
    } else {
      pdh = wtap_dump_open_ng(outfile, wtap_file_type_subtype(wth), wtap_file_encap(wth),
                              wtap_snapshot_length(wth), FALSE, shb_hdrs, idb_inf, nrb_hdrs, &err);
    }
    g_free(idb_inf);
    idb_inf = NULL;

    if (pdh == NULL) {
        cfile_dump_open_failure_message("reordercap", outfile, err,
                                        wtap_file_type_subtype(wth));
        wtap_block_array_free(shb_hdrs);
        wtap_block_array_free(nrb_hdrs);
        ret = OUTPUT_FILE_ERROR;
        goto clean_exit;
    }

    /* Allocate the array of frame pointers. */
    frames = g_ptr_array_new();

    /* Read each frame from infile */
    while (wtap_read(wth, &err, &err_info, &data_offset)) {
        FrameRecord_t *newFrameRecord;

        rec = wtap_get_rec(wth);

        newFrameRecord = g_slice_new(FrameRecord_t);
        newFrameRecord->num = frames->len + 1;
        newFrameRecord->offset = data_offset;
        if (rec->presence_flags & WTAP_HAS_TS) {
            newFrameRecord->frame_time = rec->ts;
        } else {
            nstime_set_unset(&newFrameRecord->frame_time);
        }

        if (prevFrame && frames_compare(&newFrameRecord, &prevFrame) < 0) {
           wrong_order_count++;
        }

        g_ptr_array_add(frames, newFrameRecord);
        prevFrame = newFrameRecord;
    }
    if (err != 0) {
      /* Print a message noting that the read failed somewhere along the line. */
      cfile_read_failure_message("reordercap", infile, err, err_info);
    }

    printf("%u frames, %u out of order\n", frames->len, wrong_order_count);

    /* Sort the frames */
    if (wrong_order_count > 0) {
        g_ptr_array_sort(frames, frames_compare);
    }

    /* Write out each sorted frame in turn */
    wtap_rec_init(&dump_rec);
    ws_buffer_init(&buf, 1500);
    for (i = 0; i < frames->len; i++) {
        FrameRecord_t *frame = (FrameRecord_t *)frames->pdata[i];

        /* Avoid writing if already sorted and configured to */
        if (write_output_regardless || (wrong_order_count > 0)) {
            frame_write(frame, wth, pdh, &dump_rec, &buf, infile, outfile);
        }
        g_slice_free(FrameRecord_t, frame);
    }
    wtap_rec_cleanup(&dump_rec);
    ws_buffer_free(&buf);

    if (!write_output_regardless && (wrong_order_count == 0)) {
        printf("Not writing output file because input file is already in order.\n");
    }

    /* Free the whole array */
    g_ptr_array_free(frames, TRUE);

    /* Close outfile */
    if (!wtap_dump_close(pdh, &err)) {
        cfile_close_failure_message(outfile, err);
        wtap_block_array_free(shb_hdrs);
        wtap_block_array_free(nrb_hdrs);
        ret = OUTPUT_FILE_ERROR;
        goto clean_exit;
    }
    wtap_block_array_free(shb_hdrs);
    wtap_block_array_free(nrb_hdrs);

    /* Finally, close infile and release resources. */
    wtap_close(wth);

clean_exit:
    wtap_cleanup();
    free_progdirs();
    return ret;
}