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/* rtp_stream.c
* RTP streams summary addition for Wireshark
*
* $Id: rtp_stream.c 42443 2012-05-05 20:51:14Z wmeier $
*
* Copyright 2003, Alcatel Business Systems
* By Lars Ruoff <lars.ruoff@gmx.net>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <string.h>
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <epan/epan.h>
#include <epan/packet.h>
#include <epan/tap.h>
#include <epan/dissectors/packet-rtp.h>
#include <epan/addr_resolv.h>
#include "../globals.h"
#include "ui/alert_box.h"
#include "ui/simple_dialog.h"
#include "../tap-rtp-common.h"
#include <wsutil/file_util.h>
#include "ui/gtk/rtp_stream.h"
#include "ui/gtk/rtp_stream_dlg.h"
#include "ui/gtk/main.h"
/* The one and only global rtpstream_tapinfo_t structure for tshark and wireshark.
*/
static rtpstream_tapinfo_t the_tapinfo_struct =
{0, NULL, 0, TAP_ANALYSE, NULL, NULL, NULL, 0, FALSE};
/****************************************************************************/
/* redraw the output */
static void rtpstream_draw(void *arg _U_)
{
/* XXX: see rtpstream_on_update in rtp_streams_dlg.c for comments
g_signal_emit_by_name(top_level, "signal_rtpstream_update");
*/
rtpstream_dlg_update(the_tapinfo_struct.strinfo_list);
return;
}
/****************************************************************************/
/* scan for RTP streams */
void rtpstream_scan(void)
{
gboolean was_registered = the_tapinfo_struct.is_registered;
if (!the_tapinfo_struct.is_registered)
register_tap_listener_rtp_stream();
the_tapinfo_struct.mode = TAP_ANALYSE;
cf_retap_packets(&cfile);
if (!was_registered)
remove_tap_listener_rtp_stream();
}
/****************************************************************************/
/* save rtp dump of stream_fwd */
gboolean rtpstream_save(rtp_stream_info_t* stream, const gchar *filename)
{
gboolean was_registered = the_tapinfo_struct.is_registered;
/* open file for saving */
the_tapinfo_struct.save_file = ws_fopen(filename, "wb");
if (the_tapinfo_struct.save_file==NULL) {
open_failure_alert_box(filename, errno, TRUE);
return FALSE;
}
rtp_write_header(stream, the_tapinfo_struct.save_file);
if (ferror(the_tapinfo_struct.save_file)) {
write_failure_alert_box(filename, errno);
fclose(the_tapinfo_struct.save_file);
return FALSE;
}
if (!the_tapinfo_struct.is_registered)
register_tap_listener_rtp_stream();
the_tapinfo_struct.mode = TAP_SAVE;
the_tapinfo_struct.filter_stream_fwd = stream;
cf_retap_packets(&cfile);
the_tapinfo_struct.mode = TAP_ANALYSE;
if (!was_registered)
remove_tap_listener_rtp_stream();
if (ferror(the_tapinfo_struct.save_file)) {
write_failure_alert_box(filename, errno);
fclose(the_tapinfo_struct.save_file);
return FALSE;
}
if (fclose(the_tapinfo_struct.save_file) == EOF) {
write_failure_alert_box(filename, errno);
return FALSE;
}
return TRUE;
}
/****************************************************************************/
/* mark packets in stream_fwd or stream_rev */
void rtpstream_mark(rtp_stream_info_t* stream_fwd, rtp_stream_info_t* stream_rev)
{
gboolean was_registered = the_tapinfo_struct.is_registered;
if (!the_tapinfo_struct.is_registered)
register_tap_listener_rtp_stream();
the_tapinfo_struct.mode = TAP_MARK;
the_tapinfo_struct.filter_stream_fwd = stream_fwd;
the_tapinfo_struct.filter_stream_rev = stream_rev;
cf_retap_packets(&cfile);
the_tapinfo_struct.mode = TAP_ANALYSE;
if (!was_registered)
remove_tap_listener_rtp_stream();
}
/****************************************************************************/
const rtpstream_tapinfo_t* rtpstream_get_info(void)
{
return &the_tapinfo_struct;
}
/****************************************************************************/
/* TAP INTERFACE */
/****************************************************************************/
/****************************************************************************/
void
remove_tap_listener_rtp_stream(void)
{
if (the_tapinfo_struct.is_registered) {
protect_thread_critical_region();
remove_tap_listener(&the_tapinfo_struct);
unprotect_thread_critical_region();
the_tapinfo_struct.is_registered = FALSE;
}
}
/****************************************************************************/
void
register_tap_listener_rtp_stream(void)
{
GString *error_string;
if (!the_tapinfo_struct.is_registered) {
error_string = register_tap_listener("rtp", &the_tapinfo_struct,
NULL, 0, rtpstream_reset_cb, rtpstream_packet,
rtpstream_draw);
if (error_string != NULL) {
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
"%s", error_string->str);
g_string_free(error_string, TRUE);
exit(1);
}
the_tapinfo_struct.is_registered = TRUE;
}
}
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