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tap-sctpchunkstat.c

/* tap_sctpchunkstat.c
 * SCTP chunk counter for wireshark
 * Copyright 2005 Oleg Terletsky <oleg.terletsky@comverse.com>
 *
 * $Id: tap-sctpchunkstat.c 24258 2008-02-03 15:38:20Z stig $
 *
 * 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_info.h"
#include "epan/addr_resolv.h"
#include <epan/tap.h>
#include <epan/stat_cmd_args.h>
#include "epan/value_string.h"
#include "register.h"
#include <epan/dissectors/packet-sctp.h>

typedef struct sctp_ep {
      struct sctp_ep* next;
      address src;
      address dst;
      guint16 sport;
      guint16 dport;
      guint32 chunk_count[256];
} sctp_ep_t;


/* used to keep track of the statistics for an entire program interface */
00056 typedef struct _sctpstat_t {
      char*      filter;
      guint32    number_of_packets;
      sctp_ep_t* ep_list;
} sctpstat_t;


#define SCTP_DATA_CHUNK_ID               0
#define SCTP_INIT_CHUNK_ID               1
#define SCTP_INIT_ACK_CHUNK_ID           2
#define SCTP_SACK_CHUNK_ID               3
#define SCTP_HEARTBEAT_CHUNK_ID          4
#define SCTP_HEARTBEAT_ACK_CHUNK_ID      5
#define SCTP_ABORT_CHUNK_ID              6
#define SCTP_SHUTDOWN_CHUNK_ID           7
#define SCTP_SHUTDOWN_ACK_CHUNK_ID       8
#define SCTP_ERROR_CHUNK_ID              9
#define SCTP_COOKIE_ECHO_CHUNK_ID       10
#define SCTP_COOKIE_ACK_CHUNK_ID        11
#define SCTP_ECNE_CHUNK_ID              12
#define SCTP_CWR_CHUNK_ID               13
#define SCTP_SHUTDOWN_COMPLETE_CHUNK_ID 14
#define SCTP_AUTH_CHUNK_ID            0x16
#define SCTP_ASCONF_ACK_CHUNK_ID      0x80
#define SCTP_PKTDROP_CHUNK_ID         0x81
#define SCTP_FORWARD_TSN_CHUNK_ID     0xC0
#define SCTP_ASCONF_CHUNK_ID          0xC1
#define SCTP_IETF_EXT                 0xFF

#define CHUNK_TYPE_OFFSET 0
#define CHUNK_TYPE(x)(tvb_get_guint8((x), CHUNK_TYPE_OFFSET))


extern gchar* address_to_str(const address *);


static void
sctpstat_reset(void *phs)
{
      sctpstat_t* sctp_stat = (sctpstat_t *)phs;
      sctp_ep_t* list = (sctp_ep_t*)sctp_stat->ep_list;
      sctp_ep_t* tmp = NULL;
      guint16 chunk_type;
      
      if(!list)
            return;

      for(tmp = list; tmp ; tmp=tmp->next)
            for(chunk_type = 0; chunk_type < 256; chunk_type++)
                  tmp->chunk_count[chunk_type] = 0;

      sctp_stat->number_of_packets = 0;
}


sctp_ep_t* alloc_sctp_ep(struct _sctp_info *si)
{
      sctp_ep_t* ep;
      guint16 chunk_type;

      if(!si)
            return NULL;

      if (!(ep = g_malloc(sizeof(sctp_ep_t))))
            return NULL;
      
      COPY_ADDRESS(&ep->src,&si->ip_src);
      COPY_ADDRESS(&ep->dst,&si->ip_dst);
      ep->sport = si->sport;
      ep->dport = si->dport;
      ep->next = NULL;
      for(chunk_type = 0; chunk_type < 256; chunk_type++)
            ep->chunk_count[chunk_type] = 0;
      return ep;
}


      

static int
sctpstat_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *phi)
{

      sctpstat_t *hs=(sctpstat_t *)phs;
      sctp_ep_t *tmp = NULL, *te = NULL;
      struct _sctp_info *si = (struct _sctp_info *) phi;
      guint32 tvb_number;
      guint8 chunk_type;
      
      if (!hs)
            return (0);
            
      hs->number_of_packets++;
      
      if(!hs->ep_list) {
            hs->ep_list = alloc_sctp_ep(si);
            te = hs->ep_list;
      } else {
            for(tmp=hs->ep_list ; tmp ; tmp=tmp->next)
            {
                  if((!CMP_ADDRESS(&tmp->src,&si->ip_src)) &&
                     (!CMP_ADDRESS(&tmp->dst,&si->ip_dst)) &&
                     (tmp->sport == si->sport) &&
                     (tmp->dport == si->dport))
                  {
                        te = tmp;
                        break;
                  }
            }
            if(!te) {
                  if ((te = alloc_sctp_ep(si))) {
                        te->next = hs->ep_list;
                        hs->ep_list = te;
                  }
            }
      }

      if(!te)
            return (0);

      
      if (si->number_of_tvbs > 0) {
            chunk_type = CHUNK_TYPE(si->tvb[0]);
            if ((chunk_type == SCTP_INIT_CHUNK_ID) ||
                (chunk_type == SCTP_INIT_ACK_CHUNK_ID)) {
                  te->chunk_count[chunk_type]++;
            } else {
                  for(tvb_number = 0; tvb_number < si->number_of_tvbs; tvb_number++)
                        te->chunk_count[CHUNK_TYPE(si->tvb[tvb_number])]++;
            }
      }
      return (1);
}


static void
sctpstat_draw(void *phs)
{
      sctpstat_t *hs=(sctpstat_t *)phs;
      sctp_ep_t* list = hs->ep_list, *tmp;

      printf("-------------------------------------------- SCTP Statistics --------------------------------------------------------------------------\n");
      printf("|  Total packets RX/TX %u\n", hs->number_of_packets);
      printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
      printf("|   Source IP   |PortA|    Dest. IP   |PortB|  DATA  |  SACK  |  HBEAT |HBEATACK|  INIT  | INITACK| COOKIE |COOKIACK| ABORT  |  ERROR |\n");
      printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
      
      for(tmp = list ; tmp ; tmp=tmp->next) {
            printf("|%15s|%5u|%15s|%5u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|\n",
                   address_to_str(&tmp->src),tmp->sport,
                   address_to_str(&tmp->dst),tmp->dport,
                   tmp->chunk_count[SCTP_DATA_CHUNK_ID],
                   tmp->chunk_count[SCTP_SACK_CHUNK_ID],
                   tmp->chunk_count[SCTP_HEARTBEAT_CHUNK_ID],
                   tmp->chunk_count[SCTP_HEARTBEAT_ACK_CHUNK_ID],
                   tmp->chunk_count[SCTP_INIT_CHUNK_ID],
                   tmp->chunk_count[SCTP_INIT_ACK_CHUNK_ID],
                   tmp->chunk_count[SCTP_COOKIE_ECHO_CHUNK_ID],
                   tmp->chunk_count[SCTP_COOKIE_ACK_CHUNK_ID],
                   tmp->chunk_count[SCTP_ABORT_CHUNK_ID],
                   tmp->chunk_count[SCTP_ERROR_CHUNK_ID]);
      }
      printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
}


static void
sctpstat_init(const char *optarg, void* userdata _U_)
{
      sctpstat_t *hs;
      const char *filter=NULL;
      GString *error_string;

      if(!strncmp(optarg,"sctp,stat,",11)){
            filter=optarg+11;
      } else {
            filter="";
      }

      hs = g_malloc(sizeof(sctpstat_t));
      hs->filter=g_strdup(filter);
      hs->ep_list = NULL;
      hs->number_of_packets = 0;

      sctpstat_reset(hs);

      error_string=register_tap_listener("sctp", hs, filter, NULL, sctpstat_packet, sctpstat_draw);
      if(error_string){
            /* error, we failed to attach to the tap. clean up */
            g_free(hs->filter);
            g_free(hs);

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


void
register_tap_listener_sctpstat(void)
{
      register_stat_cmd_arg("sctp,stat", sctpstat_init,NULL);
}

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