Beispiel #1
0
static void
exp_pdu_file_open(exp_pdu_t *exp_pdu_tap_data)
{
    char *tmpname, *capfile_name;
    int   err;

    /* pcapng defs */
    wtap_optionblock_t           shb_hdr;
    wtapng_iface_descriptions_t *idb_inf;
    wtap_optionblock_t           int_data;
    wtapng_if_descr_mandatory_t *int_data_mand;
    GString                     *os_info_str;
    gchar                       *opt_comment, *wireshark_ver;

    /* Create data for SHB  */
    os_info_str = g_string_new("");
    get_os_version_info(os_info_str);

    shb_hdr = wtap_optionblock_create(WTAP_OPTION_BLOCK_NG_SECTION);

    /* options */
    opt_comment = g_strdup_printf("Dump of PDUs from %s", cfile.filename);
    wtap_optionblock_set_option_string(shb_hdr, OPT_COMMENT, opt_comment);
    g_free(opt_comment);

    /*
     * UTF-8 string containing the name of the operating system used to create
     * this section.
     */
    wtap_optionblock_set_option_string(shb_hdr, OPT_SHB_OS, g_string_free(os_info_str, TRUE));
    /*
     * UTF-8 string containing the name of the application used to create
     * this section.
     */
    wireshark_ver = g_strdup_printf("Wireshark %s", get_ws_vcs_version_info());
    wtap_optionblock_set_option_string(shb_hdr, OPT_SHB_USERAPPL, wireshark_ver);
    g_free(wireshark_ver);

    /* Create fake IDB info */
    idb_inf = g_new(wtapng_iface_descriptions_t,1);
    idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtap_optionblock_t));

    /* create the fake interface data */
    int_data = wtap_optionblock_create(WTAP_OPTION_BLOCK_IF_DESCR);
    int_data_mand = (wtapng_if_descr_mandatory_t*)wtap_optionblock_get_mandatory_data(int_data);
    int_data_mand->wtap_encap      = WTAP_ENCAP_WIRESHARK_UPPER_PDU;
    int_data_mand->time_units_per_second = 1000000000; /* default nanosecond resolution */
    int_data_mand->link_type       = wtap_wtap_encap_to_pcap_encap(WTAP_ENCAP_WIRESHARK_UPPER_PDU);
    int_data_mand->snap_len        = WTAP_MAX_PACKET_SIZE;

    wtap_optionblock_set_option_string(int_data, OPT_IDB_NAME, "Fake IF, PDU->Export");
    wtap_optionblock_set_option_uint8(int_data, OPT_IDB_TSRESOL, 9);

    g_array_append_val(idb_inf->interface_data, int_data);

    /* Use a random name for the temporary import buffer */
    exp_pdu_tap_data->wdh = wtap_dump_open_tempfile_ng(&tmpname, "Wireshark_PDU_",
                            WTAP_FILE_TYPE_SUBTYPE_PCAPNG,
                            WTAP_ENCAP_WIRESHARK_UPPER_PDU, WTAP_MAX_PACKET_SIZE,
                            FALSE, shb_hdr, idb_inf, NULL, &err);
    capfile_name = g_strdup(tmpname);
    if (exp_pdu_tap_data->wdh == NULL) {
        open_failure_alert_box(capfile_name ? capfile_name : "temporary file", err, TRUE);
        goto end;
    }

    /* Run the tap */
    cf_retap_packets(&cfile);


    if (!wtap_dump_close(exp_pdu_tap_data->wdh, &err)) {
        write_failure_alert_box(capfile_name, err);
    }

    remove_tap_listener(exp_pdu_tap_data);

    /* XXX: should this use the open_routine type in the cfile instead of WTAP_TYPE_AUTO? */
    if (cf_open(&cfile, capfile_name, WTAP_TYPE_AUTO, TRUE /* temporary file */, &err) != CF_OK) {
        open_failure_alert_box(capfile_name, err, FALSE);
        goto end;
    }

    switch (cf_read(&cfile, FALSE)) {
    case CF_READ_OK:
    case CF_READ_ERROR:
        /* Just because we got an error, that doesn't mean we were unable
           to read any of the file; we handle what we could get from the
           file. */
        break;

    case CF_READ_ABORTED:
        /* The user bailed out of re-reading the capture file; the
           capture file has been closed - just free the capture file name
           string and return (without changing the last containing
           directory). */
        break;
    }

end:
    g_free(capfile_name);
    wtap_optionblock_free(shb_hdr);
    wtap_free_idb_info(idb_inf);
}
Beispiel #2
0
/*
 * Merges the files to a temporary file based on given input, and invokes
 * callback during execution. Returns MERGE_OK on success, or a MERGE_ERR_XXX
 * on failure.
 */
merge_result
merge_files_to_tempfile(gchar **out_filenamep, const char *pfx,
                        const int file_type, const char *const *in_filenames,
                        const guint in_file_count, const gboolean do_append,
                        const idb_merge_mode mode, guint snaplen,
                        const gchar *app_name, merge_progress_callback_t* cb,
                        int *err, gchar **err_info, guint *err_fileno,
                        guint32 *err_framenum)
{
    merge_in_file_t    *in_files = NULL;
    int                 frame_type = WTAP_ENCAP_PER_PACKET;
    merge_result        status = MERGE_OK;
    wtap_dumper        *pdh;
    GArray             *shb_hdrs = NULL;
    wtapng_iface_descriptions_t *idb_inf = NULL;

    g_assert(out_filenamep != NULL);
    g_assert(in_file_count > 0);
    g_assert(in_filenames != NULL);
    g_assert(err != NULL);
    g_assert(err_info != NULL);
    g_assert(err_fileno != NULL);
    g_assert(err_framenum != NULL);

    /* if a callback was given, it has to have a callback function ptr */
    g_assert((cb != NULL) ? (cb->callback_func != NULL) : TRUE);

    merge_debug("merge_files: begin");

    /* no temporary file name yet */
    *out_filenamep = NULL;

    /* open the input files */
    if (!merge_open_in_files(in_file_count, in_filenames, &in_files, cb,
                             err, err_info, err_fileno)) {
        merge_debug("merge_files: merge_open_in_files() failed with err=%d", *err);
        *err_framenum = 0;
        return MERGE_ERR_CANT_OPEN_INFILE;
    }

    if (snaplen == 0) {
        /* Snapshot length not specified - default to the maximum. */
        snaplen = WTAP_MAX_PACKET_SIZE_STANDARD;
    }

    /*
     * This doesn't tell us that much. It tells us what to set the outfile's
     * encap type to, but that's all - for example, it does *not* tells us
     * whether the input files had the same number of IDBs, for the same exact
     * interfaces, and only one IDB each, so it doesn't actually tell us
     * whether we can merge IDBs into one or not.
     */
    frame_type = merge_select_frame_type(in_file_count, in_files);
    merge_debug("merge_files: got frame_type=%d", frame_type);

    if (cb)
        cb->callback_func(MERGE_EVENT_FRAME_TYPE_SELECTED, frame_type, in_files, in_file_count, cb->data);

    /* prepare the outfile */
    if (file_type == WTAP_FILE_TYPE_SUBTYPE_PCAPNG) {
        shb_hdrs = create_shb_header(in_files, in_file_count, app_name);
        merge_debug("merge_files: SHB created");

        idb_inf = generate_merged_idb(in_files, in_file_count, mode);
        merge_debug("merge_files: IDB merge operation complete, got %u IDBs", idb_inf ? idb_inf->interface_data->len : 0);

        pdh = wtap_dump_open_tempfile_ng(out_filenamep, pfx, file_type,
                                         frame_type, snaplen,
                                         FALSE /* compressed */,
                                         shb_hdrs, idb_inf, NULL, err);
    }
    else {
        pdh = wtap_dump_open_tempfile(out_filenamep, pfx, file_type, frame_type,
                                      snaplen, FALSE /* compressed */, err);
    }

    if (pdh == NULL) {
        merge_close_in_files(in_file_count, in_files);
        g_free(in_files);
        wtap_block_array_free(shb_hdrs);
        wtap_free_idb_info(idb_inf);
        *err_framenum = 0;
        return MERGE_ERR_CANT_OPEN_OUTFILE;
    }

    if (cb)
        cb->callback_func(MERGE_EVENT_READY_TO_MERGE, 0, in_files, in_file_count, cb->data);

    status = merge_process_packets(pdh, file_type, in_files, in_file_count,
                                   do_append, snaplen, cb, err, err_info,
                                   err_fileno, err_framenum);

    g_free(in_files);
    wtap_block_array_free(shb_hdrs);
    wtap_free_idb_info(idb_inf);

    return status;
}