forked from osmocom/wireshark
13a6a325c3
svn path=/trunk/; revision=37780
584 lines
20 KiB
C
584 lines
20 KiB
C
/* tap-comparestat.c
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* Compare two capture files
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* Copyright 2008 Vincenzo Condoleo, Christophe Dirac, Reto Ruoss
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* supported by HSR (Hochschule Rapperswil)
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* This module provides statistics about two merged capture files, to find packet loss,
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* time delay, ip header checksum errors and order check to tshark.
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* It's also detecting the matching regions of the different files.
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*
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* The packets are compared by the ip id. MAC or TTL is used to distinct the different files.
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* It is only used by tshark and not wireshark
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <math.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <string.h>
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#include "epan/packet_info.h"
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#include <epan/in_cksum.h>
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#include <epan/packet.h>
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#include <epan/tap.h>
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#include <epan/timestamp.h>
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#include <epan/stat_cmd_args.h>
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#include <epan/dissectors/packet-ip.h>
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#include "timestats.h"
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/* For checksum */
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#define BYTES 8
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#define WRONG_CHKSUM 0
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#define MERGED_FILES 2
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#define TTL_SEARCH 5
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/* information which will be printed */
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typedef struct _for_print {
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guint count;
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guint16 cksum;
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nstime_t predecessor_time;
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struct _frame_info *partner;
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} for_print;
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/* each tracked packet */
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typedef struct _frame_info {
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for_print *fp;
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guint32 num;
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guint16 id;
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guint8 ip_ttl;
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address dl_dst;
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nstime_t abs_ts, zebra_time, delta;
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} frame_info;
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/* used to keep track of the statistics for an entire program interface */
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typedef struct _comparestat_t {
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char *filter;
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emem_tree_t *packet_tree, *ip_id_tree, *nr_tree;
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address eth_dst, eth_src;
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nstime_t zebra_time, current_time;
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timestat_t stats;
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GArray *ip_ttl_list;
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gboolean last_hit;
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guint32 start_ongoing_hits, stop_ongoing_hits, start_packet_nr_first, start_packet_nr_second, stop_packet_nr_first, stop_packet_nr_second;
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guint32 first_file_amount, second_file_amount;
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} comparestat_t;
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/* to call directly _init */
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static gdouble compare_variance=0.0;
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static guint8 compare_start, compare_stop;
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static gboolean TTL_method=TRUE, ON_method=TRUE;
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/* This callback is never used by tshark but it is here for completeness. */
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static void
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comparestat_reset(void *dummy _U_)
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{
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}
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/* This callback is invoked whenever the tap system has seen a packet
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* we might be interested in.
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* function returns :
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* 0: no updates, no need to call (*draw) later
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* !0: state has changed, call (*draw) sometime later
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*/
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static int
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comparestat_packet(void *arg, packet_info *pinfo, epan_dissect_t *edt _U_, const void *arg2)
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{
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comparestat_t *cs=arg;
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const ws_ip *ci=arg2;
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frame_info *fInfo;
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vec_t cksum_vec[3];
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guint16 computed_cksum=0;
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/* so this get filled, usually with the first frame */
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if(cs->eth_dst.len==0) {
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cs->eth_dst=pinfo->dl_dst;
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cs->eth_src=pinfo->dl_src;
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}
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/* Set up the fields of the pseudo-header and create checksum */
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cksum_vec[0].ptr=&ci->ip_v_hl;
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cksum_vec[0].len=BYTES;
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/* skip TTL */
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cksum_vec[1].ptr=&ci->ip_p;
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cksum_vec[1].len=1;
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/* skip header checksum and ip's (because of NAT)*/
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cksum_vec[2].ptr=ci->ip_dst.data;
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cksum_vec[2].ptr=cksum_vec[2].ptr+ci->ip_dst.len;
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/* dynamic computation */
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cksum_vec[2].len=pinfo->iphdrlen-20;
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computed_cksum=in_cksum(&cksum_vec[0], 3);
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/* collect all packet infos */
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fInfo=(frame_info*)se_alloc(sizeof(frame_info));
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fInfo->fp=(for_print*)se_alloc(sizeof(for_print));
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fInfo->fp->partner=NULL;
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fInfo->fp->count=1;
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fInfo->fp->cksum=computed_cksum;
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fInfo->num=pinfo->fd->num;
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fInfo->id=ci->ip_id;
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fInfo->ip_ttl=ci->ip_ttl;
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fInfo->dl_dst=pinfo->dl_dst;
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fInfo->abs_ts=pinfo->fd->abs_ts;
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/* clean memory */
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nstime_set_zero(&fInfo->zebra_time);
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nstime_set_zero(&fInfo->fp->predecessor_time);
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se_tree_insert32(cs->packet_tree, pinfo->fd->num, fInfo);
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return 1;
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}
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/* Find equal packets, same IP-Id, count them and make time statistics */
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static gboolean
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call_foreach_count_ip_id(gpointer value, gpointer arg)
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{
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comparestat_t *cs=(comparestat_t*)arg;
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frame_info *fInfo=(frame_info*)value, *fInfoTemp;
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nstime_t delta;
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guint i;
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/* we only need one value out of pinfo we use a temp one */
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packet_info *pinfo=(packet_info*)ep_alloc(sizeof(packet_info));
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pinfo->fd=(frame_data*)ep_alloc(sizeof(frame_data));
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pinfo->fd->num = fInfo->num;
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fInfoTemp=se_tree_lookup32(cs->ip_id_tree, fInfo->id);
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if(fInfoTemp==NULL){
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/* Detect ongoing package loss */
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if((cs->last_hit==FALSE)&&(cs->start_ongoing_hits>compare_start)&&(cs->stop_ongoing_hits<compare_stop)){
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cs->stop_ongoing_hits++;
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cs->stop_packet_nr_first=fInfo->num;
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} else if(cs->stop_ongoing_hits<compare_stop){
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cs->stop_ongoing_hits=0;
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cs->stop_packet_nr_first=G_MAXINT32;
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}
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cs->last_hit=FALSE;
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fInfo->fp->count=1;
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se_tree_insert32(cs->ip_id_tree, fInfo->id, fInfo);
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} else {
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/* Detect ongoing package hits, special behavior if start is set to 0 */
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if((cs->last_hit||(compare_start==0))&&(cs->start_ongoing_hits<compare_start||(compare_start==0))){
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if((compare_start==0)&&(cs->start_ongoing_hits!=0)){
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/* start from the first packet so allready set */
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} else {
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cs->start_ongoing_hits++;
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/* Take the lower number */
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cs->start_packet_nr_first=fInfoTemp->num;
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cs->start_packet_nr_second=fInfo->num;
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}
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} else if(cs->start_ongoing_hits<compare_start){
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cs->start_ongoing_hits=0;
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cs->start_packet_nr_first=G_MAXINT32;
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}
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cs->last_hit=TRUE;
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fInfo->fp->count=fInfoTemp->fp->count + 1;
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if(fInfoTemp->fp->cksum!=fInfo->fp->cksum){
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fInfo->fp->cksum=WRONG_CHKSUM;
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fInfoTemp->fp->cksum=WRONG_CHKSUM;
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}
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/* Add partner */
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fInfo->fp->partner=fInfoTemp;
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/* Create time statistic */
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if(fInfo->fp->count==MERGED_FILES){
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nstime_delta(&delta, &fInfo->abs_ts, &fInfoTemp->abs_ts);
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/* Set delta in both packets */
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nstime_set_zero(&fInfoTemp->delta);
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nstime_add(&fInfoTemp->delta, &delta);
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nstime_set_zero(&fInfo->delta);
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nstime_add(&fInfo->delta, &delta);
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time_stat_update(&cs->stats, &delta, pinfo);
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}
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se_tree_insert32(cs->ip_id_tree, fInfo->id, fInfo);
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}
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/* collect TTL's */
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if(TTL_method && (fInfo->num<TTL_SEARCH)){
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for(i=0; i < cs->ip_ttl_list->len; i++){
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if(g_array_index(cs->ip_ttl_list, guint8, i) == fInfo->ip_ttl){
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return FALSE;
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}
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}
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g_array_append_val(cs->ip_ttl_list, fInfo->ip_ttl);
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}
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return FALSE;
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}
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/*Create new numbering */
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static gboolean
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call_foreach_new_order(gpointer value, gpointer arg)
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{
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comparestat_t *cs=(comparestat_t*)arg;
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frame_info *fInfo=(frame_info*)value, *fInfoTemp;
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/* overwrite Info column for new ordering */
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fInfoTemp=se_tree_lookup32(cs->nr_tree, fInfo->id);
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if(fInfoTemp==NULL){
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if(TTL_method==FALSE){
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if((ADDRESSES_EQUAL(&cs->eth_dst, &fInfo->dl_dst)) || (ADDRESSES_EQUAL(&cs->eth_src, &fInfo->dl_dst))){
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se_tree_insert32(cs->nr_tree, fInfo->id, fInfo);
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fInfo->zebra_time=cs->zebra_time;
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cs->zebra_time.nsecs=cs->zebra_time.nsecs + MERGED_FILES;
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} else {
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cs->zebra_time.nsecs++;
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se_tree_insert32(cs->nr_tree, fInfo->id, fInfo);
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fInfo->zebra_time=cs->zebra_time;
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cs->zebra_time.nsecs++;
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}
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} else {
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if((g_array_index(cs->ip_ttl_list, guint8, 0)==fInfo->ip_ttl) || (g_array_index(cs->ip_ttl_list, guint8, 1)==fInfo->ip_ttl)){
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se_tree_insert32(cs->nr_tree, fInfo->id, fInfo);
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fInfo->zebra_time=cs->zebra_time;
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cs->zebra_time.nsecs=cs->zebra_time.nsecs + MERGED_FILES;
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} else {
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cs->zebra_time.nsecs++;
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se_tree_insert32(cs->nr_tree, fInfo->id, fInfo);
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fInfo->zebra_time=cs->zebra_time;
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cs->zebra_time.nsecs++;
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}
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}
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} else {
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if(TTL_method==FALSE){
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if(((ADDRESSES_EQUAL(&cs->eth_dst, &fInfo->dl_dst)) || (ADDRESSES_EQUAL(&cs->eth_src, &fInfo->dl_dst)))&&(!fmod(fInfoTemp->zebra_time.nsecs,MERGED_FILES))){
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fInfo->zebra_time.nsecs=fInfoTemp->zebra_time.nsecs;
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} else {
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fInfo->zebra_time.nsecs=fInfoTemp->zebra_time.nsecs+1;
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}
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} else {
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if(((g_array_index(cs->ip_ttl_list, guint8, 0)==fInfo->ip_ttl) || (g_array_index(cs->ip_ttl_list, guint8, 1)==fInfo->ip_ttl))&&(!fmod(fInfoTemp->zebra_time.nsecs,MERGED_FILES))){
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fInfo->zebra_time.nsecs=fInfoTemp->zebra_time.nsecs;
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} else {
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fInfo->zebra_time.nsecs=fInfoTemp->zebra_time.nsecs+1;
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}
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}
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}
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/* count packets of file */
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if(fmod(fInfo->zebra_time.nsecs, MERGED_FILES)){
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cs->first_file_amount++;
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} else {
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cs->second_file_amount++;
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}
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/* ordering */
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if(!nstime_is_unset(&cs->current_time)){
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fInfo->fp->predecessor_time.nsecs=cs->current_time.nsecs;
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}
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cs->current_time.nsecs=fInfo->zebra_time.nsecs;
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return FALSE;
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}
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/* calculate scopes if not set yet */
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static gboolean
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call_foreach_merge_settings(gpointer value, gpointer arg)
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{
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comparestat_t *cs=(comparestat_t*)arg;
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frame_info *fInfo=(frame_info*)value, *fInfoTemp=NULL;
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guint32 tot_packet_amount=cs->first_file_amount+cs->second_file_amount, swap;
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if((fInfo->num==tot_packet_amount)&&(cs->stop_packet_nr_first!=G_MAXINT32)){
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/* calculate missing stop number */
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swap=cs->stop_packet_nr_first;
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cs->stop_packet_nr_first=tot_packet_amount-cs->second_file_amount;;
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cs->stop_packet_nr_second=swap;
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}
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if((fInfo->num==tot_packet_amount)&&(cs->stop_packet_nr_first==G_MAXINT32)&&(cs->start_packet_nr_first!=G_MAXINT32)){
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fInfoTemp=se_tree_lookup32(cs->packet_tree, cs->start_packet_nr_first);
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if(fInfoTemp==NULL){
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printf("ERROR: start number not set correctly\n");
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return FALSE;
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}
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if(fmod(fInfoTemp->zebra_time.nsecs, 2)){
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/*first file*/
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cs->stop_packet_nr_first=cs->start_packet_nr_first+abs(cs->second_file_amount-(cs->start_packet_nr_second-cs->first_file_amount));
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if(cs->stop_packet_nr_first>(tot_packet_amount-cs->second_file_amount)){
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cs->stop_packet_nr_first=tot_packet_amount-cs->second_file_amount;
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}
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/*this only happens if we have too many MAC's or TTL*/
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if(cs->stop_packet_nr_first>cs->start_packet_nr_second){
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cs->stop_packet_nr_first=cs->start_packet_nr_second-1;
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}
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fInfoTemp=se_tree_lookup32(cs->packet_tree, cs->stop_packet_nr_first);
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while((fInfoTemp!=NULL)?fmod(!fInfoTemp->zebra_time.nsecs, 2):TRUE){
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cs->stop_packet_nr_first--;
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fInfoTemp=se_tree_lookup32(cs->packet_tree, cs->stop_packet_nr_first);
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}
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} else {
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/*this only happens if we have too many MAC's or TTL*/
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cs->stop_packet_nr_first=cs->first_file_amount+cs->start_packet_nr_first;
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if(cs->stop_packet_nr_first>tot_packet_amount-cs->first_file_amount){
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cs->stop_packet_nr_first=tot_packet_amount-cs->first_file_amount;
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}
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fInfoTemp=se_tree_lookup32(cs->packet_tree, cs->stop_packet_nr_first);
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while((fInfoTemp!=NULL)?fmod(fInfoTemp->zebra_time.nsecs, 2):TRUE){
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cs->stop_packet_nr_first--;
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fInfoTemp=se_tree_lookup32(cs->packet_tree, cs->stop_packet_nr_first);
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}
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}
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/* set second stop location */
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cs->stop_packet_nr_second=cs->start_packet_nr_second+abs(cs->stop_packet_nr_first-cs->start_packet_nr_first);
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if(cs->stop_packet_nr_second>tot_packet_amount){
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cs->stop_packet_nr_second=tot_packet_amount;
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}
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}
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/* no start found */
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if(fInfo->num==tot_packet_amount&&compare_start!=0&&compare_stop!=0){
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if(cs->start_packet_nr_first==G_MAXINT32){
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printf("Start point couldn't be set, choose a lower compare start");
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}
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}
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return FALSE;
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}
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static gboolean
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call_foreach_print_ip_tree(gpointer value, gpointer user_data)
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{
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frame_info *fInfo=(frame_info*)value;
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comparestat_t *cs=(comparestat_t*)user_data;
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gdouble delta, average;
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gboolean show_it=FALSE;
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delta=fabs(get_average(&fInfo->delta,1));
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average=fabs(get_average(&cs->stats.tot, cs->stats.num));
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/* special case if both are set to zero ignore start and stop numbering */
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if(compare_start!=0&&compare_stop!=0){
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/* check out if packet is in searched scope */
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if((cs->start_packet_nr_first<fInfo->num)&&(cs->stop_packet_nr_first>fInfo->num)){
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show_it=TRUE;
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} else {
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/* so we won't miss the other file */
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if((fInfo->num>cs->start_packet_nr_second)&&(fInfo->num<cs->stop_packet_nr_second)){
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show_it=TRUE;
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}
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}
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} else {
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show_it=TRUE;
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}
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if(show_it){
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if(fInfo->fp->count < MERGED_FILES){
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printf("Packet id :%i, count:%i Problem:", fInfo->id, fInfo->fp->count);
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printf("Packet lost\n");
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}
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if(fInfo->fp->count > MERGED_FILES){
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printf("Packet id :%i, count:%i Problem:", fInfo->id, fInfo->fp->count);
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printf("More than two packets\n");
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if(fInfo->fp->cksum == WRONG_CHKSUM){
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printf("Checksum error over IP header\n");
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}
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}
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if(fInfo->fp->count == MERGED_FILES){
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if(fInfo->fp->cksum == WRONG_CHKSUM){
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printf("Packet id :%i, count:%i Problem:", fInfo->id, fInfo->fp->count);
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printf("Checksum error over IP header\n");
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if(((delta < (average-cs->stats.variance)) || (delta > (average+cs->stats.variance))) && (delta > 0.0) && (cs->stats.variance!=0)){
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printf("Not arrived in time\n");
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}
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if((nstime_cmp(&fInfo->fp->predecessor_time, &fInfo->zebra_time)>0||nstime_cmp(&fInfo->fp->partner->fp->predecessor_time, &fInfo->fp->partner->zebra_time)>0) && (fInfo->zebra_time.nsecs!=MERGED_FILES) && ON_method){
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printf("Not correct order\n");
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}
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} else if(((delta < (average-cs->stats.variance)) || (delta > (average+cs->stats.variance))) && (delta > 0.0) && (cs->stats.variance!=0)) {
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printf("Packet id :%i, count:%i Problem:", fInfo->id, fInfo->fp->count);
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printf("Package not arrived in time\n");
|
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if((nstime_cmp(&fInfo->fp->predecessor_time, &fInfo->zebra_time)>0||nstime_cmp(&fInfo->fp->partner->fp->predecessor_time, &fInfo->fp->partner->zebra_time)>0) && fInfo->zebra_time.nsecs != MERGED_FILES && ON_method){
|
|
printf("Not correct order\n");
|
|
}
|
|
} else if((nstime_cmp(&fInfo->fp->predecessor_time, &fInfo->zebra_time)>0||nstime_cmp(&fInfo->fp->partner->fp->predecessor_time, &fInfo->fp->partner->zebra_time)>0) && fInfo->zebra_time.nsecs != MERGED_FILES && ON_method){
|
|
printf("Packet id :%i, count:%i Problem:", fInfo->id, fInfo->fp->count);
|
|
printf("Not correct order\n");
|
|
}
|
|
}
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/* This callback is used when tshark wants us to draw/update our
|
|
* data to the output device. Since this is tshark only output is
|
|
* stdout.
|
|
* TShark will only call this callback once, which is when tshark has
|
|
* finished reading all packets and exists.
|
|
* If used with wireshark this may be called any time, perhaps once every 3
|
|
* seconds or so.
|
|
* This function may even be called in parallell with (*reset) or (*draw)
|
|
* so make sure there are no races. The data in the rpcstat_t can thus change
|
|
* beneath us. Beware.
|
|
*/
|
|
static void
|
|
comparestat_draw(void *prs)
|
|
{
|
|
comparestat_t *cs=prs;
|
|
GString *filter_str = g_string_new("");
|
|
const gchar *statis_string;
|
|
guint32 first_file_amount, second_file_amount;
|
|
|
|
/* inital steps, clear all data before start*/
|
|
cs->zebra_time.secs=0;
|
|
cs->zebra_time.nsecs=1;
|
|
nstime_set_unset(&cs->current_time);
|
|
cs->ip_ttl_list=g_array_new(FALSE, FALSE, sizeof(guint8));
|
|
cs->last_hit=FALSE;
|
|
cs->start_ongoing_hits=0;
|
|
cs->stop_ongoing_hits=0;
|
|
cs->start_packet_nr_first=G_MAXINT32;
|
|
cs->start_packet_nr_second=G_MAXINT32;
|
|
cs->stop_packet_nr_first=G_MAXINT32;
|
|
cs->stop_packet_nr_second=G_MAXINT32;
|
|
cs->first_file_amount=0;
|
|
cs->second_file_amount=0;
|
|
|
|
time_stat_init(&cs->stats);
|
|
/* not using g_free, because struct is managed by binarytrees */
|
|
cs->ip_id_tree=se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "ip_id_tree");
|
|
emem_tree_foreach(cs->packet_tree, call_foreach_count_ip_id, cs);
|
|
|
|
/* set up TTL choice if only one number found */
|
|
if(TTL_method&&cs->ip_ttl_list->len==1){
|
|
g_array_append_val(cs->ip_ttl_list, g_array_index(cs->ip_ttl_list, guint8, 1));
|
|
}
|
|
|
|
emem_tree_foreach(cs->packet_tree, call_foreach_new_order,cs);
|
|
emem_tree_foreach(cs->packet_tree, call_foreach_merge_settings, cs);
|
|
|
|
/* remembering file amounts */
|
|
first_file_amount=cs->first_file_amount;
|
|
second_file_amount=cs->second_file_amount;
|
|
/* reset after numbering */
|
|
cs->nr_tree=se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "nr_tree");
|
|
|
|
/* Variance */
|
|
cs->stats.variance=compare_variance;
|
|
|
|
/* add statistic string */
|
|
statis_string=g_strdup_printf("Compare Statistics: \nFilter: %s\nNumber of packets total:%i 1st file:%i, 2nd file:%i\nScopes:\t start:%i stop:%i\nand:\t start:%i stop:%i\nEqual packets: %i \nAllowed variation: %f \nAverage time difference: %f\n", cs->filter ? cs->filter : "", (first_file_amount+second_file_amount), first_file_amount, second_file_amount, cs->start_packet_nr_first, cs->stop_packet_nr_first, cs->start_packet_nr_second, cs->stop_packet_nr_second, cs->stats.num, cs->stats.variance, fabs(get_average(&cs->stats.tot, cs->stats.num)));
|
|
|
|
printf("\n");
|
|
printf("===================================================================\n");
|
|
printf("%s", statis_string);
|
|
emem_tree_foreach(cs->ip_id_tree, call_foreach_print_ip_tree, cs);
|
|
printf("===================================================================\n");
|
|
g_string_free(filter_str, TRUE);
|
|
g_array_free(cs->ip_ttl_list, TRUE);
|
|
}
|
|
|
|
/* When called, this function will create a new instance of comparestat.
|
|
* This function is called from tshark when it parses the -z compare, arguments
|
|
* and it creates a new instance to store statistics in and registers this
|
|
* new instance for the compare tap.
|
|
*/
|
|
static void
|
|
comparestat_init(const char *optarg, void* userdata _U_)
|
|
{
|
|
comparestat_t *cs;
|
|
const char *filter=NULL;
|
|
GString *error_string;
|
|
gint start, stop,ttl, order, pos=0;
|
|
gdouble variance;
|
|
|
|
if(sscanf(optarg,"compare,%d,%d,%d,%d,%lf%n",&start, &stop, &ttl, &order, &variance, &pos)==5){
|
|
if(pos){
|
|
if(*(optarg+pos)==',')
|
|
filter=optarg+pos+1;
|
|
else
|
|
filter=optarg+pos;
|
|
} else {
|
|
filter=NULL;
|
|
}
|
|
} else {
|
|
fprintf(stderr, "tshark: invalid \"-z compare,<start>,<stop>,<ttl[0|1]>,<order[0|1]>,<variance>[,<filter>]\" argument\n");
|
|
exit(1);
|
|
}
|
|
|
|
compare_variance=variance;
|
|
compare_start=start;
|
|
compare_stop=stop;
|
|
TTL_method=ttl;
|
|
ON_method=order;
|
|
|
|
cs=g_malloc(sizeof(comparestat_t));
|
|
nstime_set_unset(&cs->current_time);
|
|
cs->ip_ttl_list=g_array_new(FALSE, FALSE, sizeof(guint8));
|
|
cs->last_hit=FALSE;
|
|
cs->start_ongoing_hits=0;
|
|
cs->stop_ongoing_hits=0;
|
|
cs->start_packet_nr_first=G_MAXINT32;
|
|
cs->start_packet_nr_second=G_MAXINT32;
|
|
cs->stop_packet_nr_first=G_MAXINT32;
|
|
cs->stop_packet_nr_second=G_MAXINT32;
|
|
cs->first_file_amount=0;
|
|
cs->second_file_amount=0;
|
|
|
|
cs->zebra_time.secs=0;
|
|
cs->zebra_time.nsecs=1;
|
|
cs->nr_tree=se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "nr_tree");
|
|
/* microsecond precision */
|
|
timestamp_set_precision(TS_PREC_AUTO_NSEC);
|
|
|
|
if(filter){
|
|
cs->filter=g_strdup(filter);
|
|
} else {
|
|
cs->filter=NULL;
|
|
}
|
|
|
|
/* create a Hash to count the packets with the same ip.id */
|
|
cs->packet_tree=se_tree_create(EMEM_TREE_TYPE_RED_BLACK, "Packet_info_tree");
|
|
|
|
error_string=register_tap_listener("ip", cs, filter, 0, comparestat_reset, comparestat_packet, comparestat_draw);
|
|
if(error_string){
|
|
/* error, we failed to attach to the tap. clean up */
|
|
g_free(cs->filter);
|
|
g_free(cs);
|
|
|
|
fprintf(stderr, "tshark: Couldn't register compare tap: %s\n", error_string->str);
|
|
g_string_free(error_string, TRUE);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
register_tap_listener_comparestat(void)
|
|
{
|
|
register_stat_cmd_arg("compare,", comparestat_init,NULL);
|
|
}
|