forked from osmocom/wireshark
228 lines
8.0 KiB
C
228 lines
8.0 KiB
C
/* tap_export_pdu.c
|
|
* Routines for exporting PDU:s to file
|
|
*
|
|
* $Id$
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <glib.h>
|
|
|
|
#include "globals.h"
|
|
#include "wtap.h"
|
|
#include "pcap-encap.h"
|
|
#include "version_info.h"
|
|
#include "wsutil/tempfile.h"
|
|
|
|
#include <epan/tap.h>
|
|
#include <epan/exported_pdu.h>
|
|
|
|
#include "ui/alert_box.h"
|
|
#include "ui/simple_dialog.h"
|
|
#include "tap_export_pdu.h"
|
|
|
|
/* Main entry point to the tap */
|
|
int
|
|
export_pdu_packet(void *tapdata, packet_info *pinfo, epan_dissect_t *edt _U_, const void *data)
|
|
{
|
|
const exp_pdu_data_t *exp_pdu_data = (const exp_pdu_data_t *)data;
|
|
exp_pdu_t *exp_pdu_tap_data = (exp_pdu_t *)tapdata;
|
|
struct wtap_pkthdr pkthdr;
|
|
int err;
|
|
int buffer_len;
|
|
guint8 *packet_buf;
|
|
|
|
buffer_len = exp_pdu_data->tvb_length + exp_pdu_data->tlv_buffer_len;
|
|
packet_buf = (guint8 *)g_malloc(buffer_len);
|
|
|
|
if(exp_pdu_data->tlv_buffer_len > 0){
|
|
memcpy(packet_buf, exp_pdu_data->tlv_buffer, exp_pdu_data->tlv_buffer_len);
|
|
g_free(exp_pdu_data->tlv_buffer);
|
|
}
|
|
if(exp_pdu_data->tvb_length > 0){
|
|
tvb_memcpy(exp_pdu_data->pdu_tvb, packet_buf+exp_pdu_data->tlv_buffer_len, 0, exp_pdu_data->tvb_length);
|
|
}
|
|
pkthdr.ts.secs = pinfo->fd->abs_ts.secs;
|
|
pkthdr.ts.nsecs = pinfo->fd->abs_ts.nsecs;
|
|
pkthdr.caplen = pkthdr.len = buffer_len;
|
|
|
|
pkthdr.pkt_encap = exp_pdu_tap_data->pkt_encap;
|
|
pkthdr.interface_id = 0;
|
|
pkthdr.presence_flags = 0;
|
|
pkthdr.opt_comment = g_strdup(pinfo->pkt_comment);
|
|
pkthdr.drop_count = 0;
|
|
pkthdr.pack_flags = 0;
|
|
pkthdr.presence_flags = WTAP_HAS_CAP_LEN|WTAP_HAS_INTERFACE_ID|WTAP_HAS_TS|WTAP_HAS_PACK_FLAGS;
|
|
|
|
wtap_dump(exp_pdu_tap_data->wdh, &pkthdr, packet_buf, &err);
|
|
|
|
g_free(packet_buf);
|
|
g_free(pkthdr.opt_comment);
|
|
|
|
return FALSE; /* Do not redraw */
|
|
}
|
|
|
|
void
|
|
exp_pdu_file_open(exp_pdu_t *exp_pdu_tap_data)
|
|
{
|
|
int import_file_fd;
|
|
char *tmpname, *capfile_name;
|
|
int err;
|
|
|
|
/* pcapng defs */
|
|
wtapng_section_t *shb_hdr;
|
|
wtapng_iface_descriptions_t *idb_inf;
|
|
wtapng_if_descr_t int_data;
|
|
GString *os_info_str;
|
|
char appname[100];
|
|
|
|
/* Choose a random name for the temporary import buffer */
|
|
import_file_fd = create_tempfile(&tmpname, "Wireshark_PDU_");
|
|
capfile_name = g_strdup(tmpname);
|
|
|
|
/* Create data for SHB */
|
|
os_info_str = g_string_new("");
|
|
get_os_version_info(os_info_str);
|
|
|
|
g_snprintf(appname, sizeof(appname), "Wireshark " VERSION "%s", wireshark_gitversion);
|
|
|
|
shb_hdr = g_new(wtapng_section_t,1);
|
|
shb_hdr->section_length = -1;
|
|
/* options */
|
|
shb_hdr->opt_comment = g_strdup_printf("Dump of PDU:s from %s", cfile.filename);
|
|
shb_hdr->shb_hardware = NULL; /* UTF-8 string containing the
|
|
* description of the hardware used to create this section.
|
|
*/
|
|
shb_hdr->shb_os = os_info_str->str; /* UTF-8 string containing the name
|
|
* of the operating system used to create this section.
|
|
*/
|
|
g_string_free(os_info_str, FALSE); /* The actual string is not freed */
|
|
shb_hdr->shb_user_appl = appname; /* UTF-8 string containing the name
|
|
* of the application used to create this section.
|
|
*/
|
|
|
|
|
|
/* Create fake IDB info */
|
|
idb_inf = g_new(wtapng_iface_descriptions_t,1);
|
|
idb_inf->number_of_interfaces = 1;
|
|
idb_inf->interface_data = g_array_new(FALSE, FALSE, sizeof(wtapng_if_descr_t));
|
|
|
|
/* create the fake interface data */
|
|
int_data.wtap_encap = WTAP_ENCAP_WIRESHARK_UPPER_PDU;
|
|
int_data.time_units_per_second = 1000000; /* default microsecond resolution */
|
|
int_data.link_type = wtap_wtap_encap_to_pcap_encap(WTAP_ENCAP_WIRESHARK_UPPER_PDU);
|
|
int_data.snap_len = WTAP_MAX_PACKET_SIZE;
|
|
int_data.if_name = g_strdup("Fake IF, PDU->Export");
|
|
int_data.opt_comment = NULL;
|
|
int_data.if_description = NULL;
|
|
int_data.if_speed = 0;
|
|
int_data.if_tsresol = 6;
|
|
int_data.if_filter_str = NULL;
|
|
int_data.bpf_filter_len = 0;
|
|
int_data.if_filter_bpf_bytes = NULL;
|
|
int_data.if_os = NULL;
|
|
int_data.if_fcslen = -1;
|
|
int_data.num_stat_entries = 0; /* Number of ISB:s */
|
|
int_data.interface_statistics = NULL;
|
|
|
|
g_array_append_val(idb_inf->interface_data, int_data);
|
|
|
|
exp_pdu_tap_data->wdh = wtap_dump_fdopen_ng(import_file_fd, WTAP_FILE_TYPE_SUBTYPE_PCAPNG, WTAP_ENCAP_WIRESHARK_UPPER_PDU, WTAP_MAX_PACKET_SIZE, FALSE, shb_hdr, idb_inf, &err);
|
|
if (exp_pdu_tap_data->wdh == NULL) {
|
|
open_failure_alert_box(capfile_name, 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);
|
|
|
|
if (cf_open(&cfile, capfile_name, 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);
|
|
}
|
|
|
|
gboolean
|
|
do_export_pdu(const char *filter, gchar *tap_name, gpointer data)
|
|
{
|
|
GString *error_string;
|
|
exp_pdu_t *exp_pdu_tap_data = (exp_pdu_t *)data;
|
|
|
|
/* Register this tap listener now */
|
|
error_string = register_tap_listener(tap_name, /* The name of the tap we want to listen to */
|
|
exp_pdu_tap_data, /* instance identifier/pointer to a struct holding
|
|
* all state variables */
|
|
filter, /* pointer to a filter string */
|
|
TL_REQUIRES_NOTHING, /* flags for the tap listener */
|
|
NULL,
|
|
export_pdu_packet,
|
|
NULL);
|
|
if (error_string){
|
|
/* Error. We failed to attach to the tap. Clean up */
|
|
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "%s", error_string->str);
|
|
g_string_free(error_string, TRUE);
|
|
return FALSE;
|
|
}
|
|
|
|
exp_pdu_file_open(exp_pdu_tap_data);
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|