summary.c

   1 /* summary.c
   2  * Routines for capture file summary info
   3  *
   4  * $Id: summary.c,v 1.23 2003/09/02 22:10:32 guy Exp $
   5  *
   6  * Ethereal - Network traffic analyzer
   7  * By Gerald Combs <gerald@ethereal.com>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <epan/packet.h>
  30 #include "globals.h"
  31 #include "summary.h"
  32
  33
  34 static double
  35 secs_usecs( guint32 s, guint32 us)
  36 {
  37   return (us / 1000000.0) + (double)s;
  38 }
  39
  40 static void
  41 tally_frame_data(frame_data *cur_frame, summary_tally *sum_tally)
  42 {
  43   double cur_time;
  44
  45   cur_time = secs_usecs(cur_frame->abs_secs, cur_frame->abs_usecs);
  46
  47   if (cur_time < sum_tally->start_time) {
  48     sum_tally->start_time = cur_time;
  49   }
  50   if (cur_time > sum_tally->stop_time){
  51     sum_tally->stop_time = cur_time;
  52   }
  53   sum_tally->bytes += cur_frame->pkt_len;
  54   if (cur_frame->flags.passed_dfilter){
  55     if (sum_tally->filtered_count==0){
  56             sum_tally->filtered_start= cur_time;
  57             sum_tally->filtered_stop = cur_time;
  58     } else {
  59             if (cur_time < sum_tally->filtered_start) {
  60                     sum_tally->start_time = cur_time;
  61             }
  62             if (cur_time > sum_tally->filtered_stop) {
  63                     sum_tally->filtered_stop = cur_time;
  64             }
  65     }
  66     sum_tally->filtered_count++;
  67     sum_tally->filtered_bytes += cur_frame->pkt_len ;
  68   }
  69   if (cur_frame->flags.marked)
  70     sum_tally->marked_count++;
  71
  72 }
  73
  74 void
  75 summary_fill_in(summary_tally *st)
  76 {
  77
  78   frame_data    *first_frame, *cur_frame;
  79   int           i;
  80   frame_data    *cur_glist;
  81
  82   st->start_time = 0;
  83   st->stop_time = 0;
  84   st->bytes = 0;
  85   st->filtered_count = 0;
  86   st->filtered_start = 0;
  87   st->filtered_stop   = 0;
  88   st->filtered_bytes = 0;
  89   st->marked_count = 0;
  90
  91   /* initialize the tally */
  92   if (cfile.plist != NULL) {
  93     first_frame = cfile.plist;
  94     st->start_time      = secs_usecs(first_frame->abs_secs,first_frame->abs_usecs);
  95     st->stop_time = secs_usecs(first_frame->abs_secs,first_frame->abs_usecs);
  96     cur_glist = cfile.plist;
  97
  98     for (i = 0; i < cfile.count; i++) {
  99       cur_frame = cur_glist;
 100       tally_frame_data(cur_frame, st);
 101       cur_glist = cur_glist->next;
 102     }
 103   }
 104
 105   st->filename = cfile.filename;
 106   st->file_length = cfile.f_len;
 107   st->encap_type = cfile.cd_t;
 108   st->has_snap = cfile.has_snap;
 109   st->snap = cfile.snap;
 110   st->elapsed_time = secs_usecs(cfile.esec, cfile.eusec);
 111   st->packet_count = cfile.count;
 112   st->drops_known = cfile.drops_known;
 113   st->drops = cfile.drops;
 114   st->iface = cfile.iface;
 115   st->dfilter = cfile.dfilter;
 116
 117 #ifdef HAVE_LIBPCAP
 118   st->cfilter = cfile.cfilter;
 119 #else
 120   st->cfilter = NULL;
 121 #endif
 122 }