forked from osmocom/wireshark
![Stig Bjørlykke](/assets/img/avatar_default.png)
The packet_num was left uninitialized after refactoring "Follow Stream". Ping-Bug: 11988 Change-Id: Iaea2560c8417503de59ddb0337cd023bcbcbbfee Reviewed-on: https://code.wireshark.org/review/13872 Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>
214 lines
6.7 KiB
C
214 lines
6.7 KiB
C
/* follow.c
|
|
*
|
|
* Copyright 1998 Mike Hall <mlh@io.com>
|
|
*
|
|
* 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 <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <glib.h>
|
|
#include <epan/packet.h>
|
|
#include "follow.h"
|
|
#include <epan/tap.h>
|
|
|
|
struct register_follow {
|
|
int proto_id; /* protocol id (0-indexed) */
|
|
const char* tap_listen_str; /* string used in register_tap_listener */
|
|
follow_conv_filter_func conv_filter; /* generate "conversation" filter to follow */
|
|
follow_index_filter_func index_filter; /* generate stream/index filter to follow */
|
|
follow_address_filter_func address_filter; /* generate address filter to follow */
|
|
follow_port_to_display_func port_to_display; /* port to name resolution for follow type */
|
|
follow_tap_func tap_handler; /* tap listener handler */
|
|
};
|
|
|
|
static GSList *registered_followers = NULL;
|
|
|
|
static gint
|
|
insert_sorted_by_name(gconstpointer aparam, gconstpointer bparam)
|
|
{
|
|
const register_follow_t *a = (const register_follow_t *)aparam;
|
|
const register_follow_t *b = (const register_follow_t *)bparam;
|
|
|
|
return g_ascii_strcasecmp(proto_get_protocol_short_name(find_protocol_by_id(a->proto_id)), proto_get_protocol_short_name(find_protocol_by_id(b->proto_id)));
|
|
}
|
|
|
|
void register_follow_stream(const int proto_id, const char* tap_listener,
|
|
follow_conv_filter_func conv_filter, follow_index_filter_func index_filter, follow_address_filter_func address_filter,
|
|
follow_port_to_display_func port_to_display, follow_tap_func tap_handler)
|
|
{
|
|
register_follow_t *follower;
|
|
DISSECTOR_ASSERT(tap_listener);
|
|
DISSECTOR_ASSERT(conv_filter);
|
|
DISSECTOR_ASSERT(index_filter);
|
|
DISSECTOR_ASSERT(address_filter);
|
|
DISSECTOR_ASSERT(port_to_display);
|
|
DISSECTOR_ASSERT(tap_handler);
|
|
|
|
follower = g_new(register_follow_t,1);
|
|
|
|
follower->proto_id = proto_id;
|
|
follower->tap_listen_str = tap_listener;
|
|
follower->conv_filter = conv_filter;
|
|
follower->index_filter = index_filter;
|
|
follower->address_filter = address_filter;
|
|
follower->port_to_display = port_to_display;
|
|
follower->tap_handler = tap_handler;
|
|
|
|
registered_followers = g_slist_insert_sorted(registered_followers, follower, insert_sorted_by_name);
|
|
}
|
|
|
|
int get_follow_proto_id(register_follow_t* follower)
|
|
{
|
|
if (follower == NULL)
|
|
return -1;
|
|
|
|
return follower->proto_id;
|
|
}
|
|
|
|
const char* get_follow_tap_string(register_follow_t* follower)
|
|
{
|
|
if (follower == NULL)
|
|
return "";
|
|
|
|
return follower->tap_listen_str;
|
|
}
|
|
|
|
follow_conv_filter_func get_follow_conv_func(register_follow_t* follower)
|
|
{
|
|
return follower->conv_filter;
|
|
}
|
|
|
|
follow_index_filter_func get_follow_index_func(register_follow_t* follower)
|
|
{
|
|
return follower->index_filter;
|
|
}
|
|
|
|
follow_address_filter_func get_follow_address_func(register_follow_t* follower)
|
|
{
|
|
return follower->address_filter;
|
|
}
|
|
|
|
follow_port_to_display_func get_follow_port_to_display(register_follow_t* follower)
|
|
{
|
|
return follower->port_to_display;
|
|
}
|
|
|
|
follow_tap_func get_follow_tap_handler(register_follow_t* follower)
|
|
{
|
|
return follower->tap_handler;
|
|
}
|
|
|
|
|
|
register_follow_t* get_follow_by_name(const char* proto_short_name)
|
|
{
|
|
guint i, size = g_slist_length(registered_followers);
|
|
register_follow_t *follower;
|
|
GSList *slist;
|
|
|
|
for (i = 0; i < size; i++) {
|
|
slist = g_slist_nth(registered_followers, i);
|
|
follower = (register_follow_t*)slist->data;
|
|
|
|
if (strcmp(proto_short_name, proto_get_protocol_short_name(find_protocol_by_id(follower->proto_id))) == 0)
|
|
return follower;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void follow_iterate_followers(GFunc func, gpointer user_data)
|
|
{
|
|
g_slist_foreach(registered_followers, func, user_data);
|
|
}
|
|
|
|
gchar* follow_get_stat_tap_string(register_follow_t* follower)
|
|
{
|
|
GString *cmd_str = g_string_new("follow,");
|
|
g_string_append(cmd_str, proto_get_protocol_filter_name(follower->proto_id));
|
|
return g_string_free(cmd_str, FALSE);
|
|
}
|
|
|
|
/* here we are going to try and reconstruct the data portion of a TCP
|
|
session. We will try and handle duplicates, TCP fragments, and out
|
|
of order packets in a smart way. */
|
|
void
|
|
follow_reset_stream(follow_info_t* info)
|
|
{
|
|
info->bytes_written[0] = info->bytes_written[1] = 0;
|
|
info->client_port = 0;
|
|
info->server_port = 0;
|
|
info->client_ip.type = FT_NONE;
|
|
info->client_ip.len = 0;
|
|
info->server_ip.type = FT_NONE;
|
|
info->server_ip.len = 0;
|
|
}
|
|
|
|
gboolean
|
|
follow_tvb_tap_listener(void *tapdata, packet_info *pinfo,
|
|
epan_dissect_t *edt _U_, const void *data)
|
|
{
|
|
follow_record_t *follow_record;
|
|
follow_info_t *follow_info = (follow_info_t *)tapdata;
|
|
tvbuff_t *next_tvb = (tvbuff_t *)data;
|
|
|
|
follow_record = g_new(follow_record_t,1);
|
|
|
|
follow_record->data = g_byte_array_sized_new(tvb_captured_length(next_tvb));
|
|
follow_record->data = g_byte_array_append(follow_record->data,
|
|
tvb_get_ptr(next_tvb, 0, -1),
|
|
tvb_captured_length(next_tvb));
|
|
follow_record->packet_num = pinfo->fd->num;
|
|
|
|
if (follow_info->client_port == 0) {
|
|
follow_info->client_port = pinfo->srcport;
|
|
copy_address(&follow_info->client_ip, &pinfo->src);
|
|
follow_info->server_port = pinfo->destport;
|
|
copy_address(&follow_info->server_ip, &pinfo->dst);
|
|
}
|
|
|
|
if (addresses_equal(&follow_info->client_ip, &pinfo->src) && follow_info->client_port == pinfo->srcport)
|
|
follow_record->is_server = FALSE;
|
|
else
|
|
follow_record->is_server = TRUE;
|
|
|
|
/* update stream counter */
|
|
follow_info->bytes_written[follow_record->is_server] += follow_record->data->len;
|
|
|
|
follow_info->payload = g_list_append(follow_info->payload, follow_record);
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local Variables:
|
|
* c-basic-offset: 2
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* ex: set shiftwidth=2 tabstop=8 expandtab:
|
|
* :indentSize=2:tabSize=8:noTabs=true:
|
|
*/
|