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tap-camelcounter.c

/* tap_camelcounter.c
 * camel message counter for tshark
 * Copyright 2006 Florent DROUIN
 *
 * $Id: tap-camelcounter.c 24382 2008-02-18 22:39:03Z wmeier $
 *
 * This part of code is extracted from tap-h225counter.c from Lars Roland
 *
 * 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>

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

#include <string.h>
#include "epan/packet.h"
#include "epan/packet_info.h"
#include "epan/tap.h"
#include "epan/value_string.h"
#include "register.h"
#include "epan/stat_cmd_args.h"
#include "epan/asn1.h"
#include "epan/camel-persistentdata.h"

void register_tap_listener_camelcounter(void);

/* used to keep track of the statistics for an entire program interface */
struct camelcounter_t {
  char *filter; 
  guint32 camel_msg[camel_MAX_NUM_OPR_CODES];
};


static void camelcounter_reset(void *phs)
{
  struct camelcounter_t * p_counter= ( struct camelcounter_t *) phs;
  memset(p_counter,0,sizeof(struct camelcounter_t));
}

static int camelcounter_packet(void *phs,
                         packet_info *pinfo _U_,
                         epan_dissect_t *edt _U_, 
                         const void *phi)
{
  struct camelcounter_t * p_counter =(struct camelcounter_t *)phs;
  const struct camelsrt_info_t * pi=phi;
  if (pi->opcode != 255)
    p_counter->camel_msg[pi->opcode]++;
  
  return 1;
}


static void camelcounter_draw(void *phs)
{
  struct camelcounter_t * p_counter= (struct camelcounter_t *)phs;
  int i;
  printf("\n");
  printf("CAMEL Message and Response Status Counter:\n");
  printf("------------------------------------------\n");

  for(i=0;i<camel_MAX_NUM_OPR_CODES;i++) {
    /* Message counter */
    if(p_counter->camel_msg[i]!=0) {
      printf("%30s ", val_to_str(i,camel_opr_code_strings,"Unknown message "));
      printf("%6d\n", p_counter->camel_msg[i]);
    } 
  } /* Message Type */
  printf("------------------------------------------\n");
}

static void camelcounter_init(const char *optarg, void* userdata _U_)
{
  struct camelcounter_t *p_camelcounter;
  const char *filter=NULL;
  const char *emptyfilter=""; 
  GString *error_string;

  if(!strncmp(optarg,"camel,counter,",13)){
    filter=optarg+13;
  } else {
    filter=NULL;
  }

  p_camelcounter = g_malloc(sizeof(struct camelcounter_t));
  if(filter){
    p_camelcounter->filter=g_strdup(filter);
  } else {
    p_camelcounter->filter=NULL;
  }
  
  camelcounter_reset(p_camelcounter);

  if (filter) {
    error_string=register_tap_listener("CAMEL",
                               p_camelcounter,
                               filter,
                               NULL,
                               camelcounter_packet,
                               camelcounter_draw);
  } else {
    error_string=register_tap_listener("CAMEL",
                               p_camelcounter,
                               emptyfilter,
                               NULL,
                               camelcounter_packet,
                               camelcounter_draw);
  }

  if(error_string){
    /* error, we failed to attach to the tap. clean up */
    g_free(p_camelcounter->filter);
    g_free(p_camelcounter);

    fprintf(stderr, "tshark: Couldn't register camel,counter tap: %s\n",
          error_string->str);
    g_string_free(error_string, TRUE);
    exit(1);
  }
}


void  /* Next line mandatory */
register_tap_listener_camelcounter(void)
{
  register_stat_cmd_arg("camel,counter", camelcounter_init, NULL);
}

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