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tap-rpcprogs.c

/* tap-rpcprogs.c
 * rpcstat   2002 Ronnie Sahlberg
 *
 * $Id: tap-rpcprogs.c 21442 2007-04-16 04:34:07Z morriss $
 *
 * 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.
 */

/* This module provides rpc call/reply SRT statistics to tshark.
 * It is only used by tshark and not wireshark
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <stdio.h>

#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif

#include <string.h>
#include "epan/packet_info.h"
#include <epan/tap.h>
#include <epan/stat_cmd_args.h>
#include <epan/dissectors/packet-rpc.h>
#include "register.h"

/* used to keep track of statistics for a specific program/version */
typedef struct _rpc_program_t {
      struct _rpc_program_t *next;
      guint32 program;
      guint32 version;
      int num;
      nstime_t min;
      nstime_t max;
      nstime_t tot;
} rpc_program_t;

static rpc_program_t *prog_list=NULL;
static int already_enabled=0;

static int
rpcprogs_packet(void *dummy1 _U_, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pri)
{
      const rpc_call_info_value *ri=pri;
      nstime_t delta;
      rpc_program_t *rp=NULL;

      if(!prog_list){
            /* the list was empty */
            rp=g_malloc(sizeof(rpc_program_t));
            rp->next=NULL;
            rp->program=ri->prog;
            rp->version=ri->vers;
            rp->num=0;
            rp->min.secs=0;
            rp->min.nsecs=0;
            rp->max.secs=0;
            rp->max.nsecs=0;
            rp->tot.secs=0;
            rp->tot.nsecs=0;
            prog_list=rp;
      } else if((ri->prog==prog_list->program)
            &&(ri->vers==prog_list->version)){
            rp=prog_list;
      } else if( (ri->prog<prog_list->program)
            ||((ri->prog==prog_list->program)&&(ri->vers<prog_list->version))){
            /* we should be first entry in list */
            rp=g_malloc(sizeof(rpc_program_t));
            rp->next=prog_list;
            rp->program=ri->prog;
            rp->version=ri->vers;
            rp->num=0;
            rp->min.secs=0;
            rp->min.nsecs=0;
            rp->max.secs=0;
            rp->max.nsecs=0;
            rp->tot.secs=0;
            rp->tot.nsecs=0;
            prog_list=rp;
      } else {
            /* we go somewhere else in the list */
            for(rp=prog_list;rp;rp=rp->next){
                  if((rp->next)
                  && (rp->next->program==ri->prog)
                  && (rp->next->version==ri->vers)){
                        rp=rp->next;
                        break;
                  }
                  if((!rp->next)
                  || (rp->next->program>ri->prog)
                  || (  (rp->next->program==ri->prog)
                      &&(rp->next->version>ri->vers))){
                        rpc_program_t *trp;
                        trp=g_malloc(sizeof(rpc_program_t));
                        trp->next=rp->next;
                        trp->program=ri->prog;
                        trp->version=ri->vers;
                        trp->num=0;
                        trp->min.secs=0;
                        trp->min.nsecs=0;
                        trp->max.secs=0;
                        trp->max.nsecs=0;
                        trp->tot.secs=0;
                        trp->tot.nsecs=0;
                        rp->next=trp;
                        rp=trp;
                        break;
                  }
            }
      }

      
      /* we are only interested in reply packets */
      if(ri->request){
            return 0;
      }

      /* calculate time delta between request and reply */
      nstime_delta(&delta, &pinfo->fd->abs_ts, &ri->req_time);

      if((rp->max.secs==0)
      && (rp->max.nsecs==0) ){
            rp->max.secs=delta.secs;
            rp->max.nsecs=delta.nsecs;
      }

      if((rp->min.secs==0)
      && (rp->min.nsecs==0) ){
            rp->min.secs=delta.secs;
            rp->min.nsecs=delta.nsecs;
      }

      if( (delta.secs<rp->min.secs)
      ||( (delta.secs==rp->min.secs)
        &&(delta.nsecs<rp->min.nsecs) ) ){
            rp->min.secs=delta.secs;
            rp->min.nsecs=delta.nsecs;
      }

      if( (delta.secs>rp->max.secs)
      ||( (delta.secs==rp->max.secs)
        &&(delta.nsecs>rp->max.nsecs) ) ){
            rp->max.secs=delta.secs;
            rp->max.nsecs=delta.nsecs;
      }
      
      rp->tot.secs += delta.secs;
      rp->tot.nsecs += delta.nsecs;
      if(rp->tot.nsecs>1000000000){
            rp->tot.nsecs-=1000000000;
            rp->tot.secs++;
      }
      rp->num++;

      return 1;
}


static void
rpcprogs_draw(void *dummy _U_)
{
      guint64 td;
      rpc_program_t *rp;
      char str[64];

      printf("\n");
      printf("===================================================================\n");
      printf("ONC-RPC Program Statistics:\n");
      printf("Program    Version  Calls   Min SRT   Max SRT   Avg SRT\n");
      for(rp=prog_list;rp;rp=rp->next){
            /* scale it to units of 10us.*/
            td=rp->tot.secs;
            td=td*100000+(int)rp->tot.nsecs/10000;
            if(rp->num){
                  td/=rp->num;
            } else {
                  td=0;
            }

            g_snprintf(str, sizeof(str), "%s(%d)",rpc_prog_name(rp->program),rp->program);
            printf("%-15s %2d %6d %3d.%05d %3d.%05d %3" PRIu64 ".%05" PRIu64 "\n",
                  str,
                  rp->version,
                  rp->num,
                  (int)rp->min.secs,rp->min.nsecs/10000,
                  (int)rp->max.secs,rp->max.nsecs/10000,
                  td/100000, td%100000
            );
      }
      printf("===================================================================\n");
}


static void
rpcprogs_init(const char *optarg _U_, void* userdata _U_)
{
      GString *error_string;

      if(already_enabled){
            return;
      }
      already_enabled=1;

      error_string=register_tap_listener("rpc", NULL, NULL, NULL, rpcprogs_packet, rpcprogs_draw);
      if(error_string){
            fprintf(stderr,"tshark: Couldn't register rpc,programs tap: %s\n",
                error_string->str);
            g_string_free(error_string, TRUE);
            exit(1);
      }
}


void
register_tap_listener_rpcprogs(void)
{
      register_stat_cmd_arg("rpc,programs", rpcprogs_init, NULL);
}



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